Unless the context otherwise requires, all references in this report to "Arch", "we", "us", or "our" are to Arch Resources, Inc. and its subsidiaries.

Cautionary Notice Regarding Forward-Looking Statements



This report contains "forward-looking statements" - that is, statements related
to future, not past, events. In this context, forward-looking statements often
address our expected future business and financial performance, and often
contain words such as "should," "appears," "expects," "anticipates," "intends,"
"plans," "believes," "seeks," or "will." Forward-looking statements by their
nature address matters that are, to different degrees, uncertain. For us,
particular uncertainties arise from the COVID-19 pandemic, including its adverse
effects on businesses, economies, and financial markets worldwide; from the
impact of COVID-19 on efficiency, costs and production; from changes in the
demand for our coal by the steel production and electricity generation
industries; from our ability to access the capital markets on acceptable terms
and conditions; from policy, legislation and regulations relating to the Clean
Air Act, greenhouse gas emissions, incentives for alternative energy sources,
and other environmental initiatives; from competition within our industry and
with producers of competing energy sources; from our ability to successfully
acquire or develop coal reserves, including the development of our Leer South
mine; from operational, geological, permit, labor, transportation, and
weather-related factors; from the effects of foreign and domestic trade
policies, actions or disputes; from fluctuations in the amount of cash we
generate from operations, which could impact, among other things, our ability to
service our outstanding indebtedness and fund capital expenditures; from our
ability to successfully integrate the operations that we acquire; from our
ability to generate significant revenue to make payments required by, and to
comply with restrictions related to, our indebtedness, including our ability to
repurchase our convertible notes; from additional demands for credit support by
third parties; from the loss of, or significant reduction in, purchases by our
largest customers; from the development of future technology to replace coal
with hydrogen in the steelmaking process; and from numerous other matters of
national, regional and global scale, including those of a political, economic,
business, competitive or regulatory nature. These uncertainties may cause our
actual future results to be materially different than those expressed in our
forward-looking statements. We do not undertake to update our forward-looking
statements, whether as a result of new information, future events or otherwise,
except as may be required by law. For a description of some of the risks and
uncertainties that may affect our future results, you should see the "Risk
Factors" in Item 1A of our Annual Report on Form 10-K for the year ended
December 31, 2020 and subsequent Form 10-Q filings.

COVID-19


In the first quarter of 2020, COVID-19 emerged as a global level pandemic. The
continuing responses to the COVID-19 outbreak include actions that have a
significant impact on domestic and global economies, including travel
restrictions, gathering bans, stay at home orders, and many other restrictive
measures. All of our operations have been classified as essential in the states
in which we operate. We have instituted many policies and procedures, in
alignment with CDC guidelines along with state and local mandates, to protect
our employees during the COVID-19 outbreak. These policies and procedures
include, but are not limited to, staggering shift times to limit the number of
people in common areas at one time, limiting meetings and meeting sizes,
continual cleaning and disinfecting of high touch and high traffic areas,
including door handles, bath rooms, bath houses, access elevators, mining
equipment, and other areas, limiting contractor access to our properties,
limiting business travel, and instituting work from home for administrative
employees. We plan to keep these policies and procedures in place, in accordance
with CDC, state, and local guidelines, and continually evaluate further
enhancements for as long as necessary. We recognize that the COVID-19 outbreak
and responses thereto will also impact both our customers and suppliers. To
date, we have not had any significant issues with critical suppliers, and we
continue to communicate with them and closely monitor their developments to
ensure we have access to the goods and services required to maintain our
operations and continue our Leer South development. Our customers have reacted,
and continue to react, in various ways and to varying degrees to changes in
demand for their products. Our current view of our customer demand situation is
discussed in greater detail in the "Overview" section below.

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During the first quarter of 2021, the COVID-19 case rate for our employees
declined significantly, and vaccines for COVID-19 became available. Through
education, monetary incentives, and vaccine logistical assistance, we have
actively encouraged our workforce to get vaccinated. We intend to continue
encouraging vaccination, and we are hopeful that as the availability of vaccine
continues to increase, the case rate of our employees will continue to decline,
and economic activity in general will accelerate.





Overview

Our results for the first quarter of 2021 benefited from improvement in
metallurgical and thermal coal markets. During the first quarter of 2021, global
economic growth appears to have accelerated as the arrival of vaccines for
COVID-19 has allowed some reduction in restrictions in some jurisdictions, and
the anticipation of further reductions in restrictions as vaccination rates
increase and cases decrease.

By the end of the first quarter of 2021, domestic steel industry capacity
utilization exceeded the prior year for the first time since the initial COVID
related industrial shutdowns began late in the first quarter of 2020.
Additionally, global steel prices have risen appreciably, and domestic steel
prices were at historic levels by the end of the quarter driven by economic
recovery. The return of overall industrial production to pre-COVID-19 levels is
still likely to be a lengthy process and, as we saw in the fourth quarter of
2020, is subject to setbacks should COVID-19 become resurgent. North American
coking coal supply remains constrained as many of the significant high cost
coking coal mine idlings announced during 2020 remain in place. Some of the
curtailed production has returned, and more may return to the market. We believe
that the cash cost of a significant portion of the currently curtailed coking
coal production exceeds current prompt pricing. Due to our low cost structure,
we have avoided idling any of our coking coal operations. Longer term, we
believe continued limited global capital investment in new coking coal
production capacity, economic pressure on higher cost production sources, normal
reserve depletion, and accelerating economic growth will provide support to
coking coal markets as demand continues to return to the steel production supply
chain.

During the fourth quarter of 2020, a major political dispute that manifested
itself as a trade dispute escalated between China, a major importer of coking
coal, and Australia, the world's largest exporter of coking coal. Specifically,
China has effectively banned the import of coking coal, among other export
products, from Australia. Historical trade patterns remain disrupted, and
pricing anomalies continue in the international coking coal markets. Through the
first quarter of 2021, indices for United States (US) east coast coking coal
have remained relatively stable at levels above those seen during the depths of
the pandemic. Australian Premium Low Volatile (PLV) coking coal prices were well
below US east coast prices for most of the quarter. Uncertainty and volatility
in pricing and pricing relationships are likely until the larger political
dispute between China and Australia is settled. While most of our committed but
unpriced coking coal volume is linked to the United States east coast indices,
we do have some volume of committed but unpriced coking coal linked to the PLV
or other Asia/Pacific indexes for 2021.

Domestic thermal coal burn improved in the first quarter of 2021 due to
anticipated winter heating season demand, favorable weather during this heating
season, and increased natural gas prices. Thermal coal demand remains pressured
by continuing increases in subsidized renewable generation sources, particularly
wind. However, increased natural gas prices led to increases in the percentage
of coal fired generation to total generation in the first quarter of 2021
compared to the first quarter of 2020. Production levels of natural gas for the
first quarter of 2021 were below the prior year's levels, and storage levels of
the competing fuel dropped below levels seen this time last year. We believe
coal generator stockpiles declined during the current quarter, but remain above
historical averages based on days of burn. During the first quarter of 2021,
international thermal coal market pricing remained at levels that support
economic exports from our West Elk operation and we have layered in export
commitments for this operation for the current year. Similar to metallurgical
markets discussed above, the availability of COVID-19 vaccines and related
reductions of restrictions should positively impact economic growth and power
generation generally; however, high generator thermal coal stockpiles and the
continued growth of subsidized renewable generation sources will continue to
negatively impact thermal coal demand. While we may see a temporary improvement
in thermal coal demand due to accelerating economic growth, longer term we
expect domestic and global thermal markets to remain challenged.

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On September 29, 2020 the U.S. District Court ruled against our proposal with
Peabody to form a joint venture that would have combined our Powder River Basin
and Colorado mining operations with Peabody's, and we subsequently announced the
termination of our joint venture efforts. We continue to pursue other strategic
alternatives for our thermal assets, including, among other things, potential
divestiture. We are concurrently shrinking our operational footprint at our
thermal operations. In particular, during the first quarter of 2021, we
completed approximately $10.3 million of Asset Retirement Obligation (ARO) work
at these operations, compared to approximately $0.6 million in the first quarter
of 2020. We are also planning to establish self-funding mechanisms for these
long-term liabilities at those operations. Operationally, we will maintain our
focus on aligning our thermal production rates with the secular decline in
domestic thermal coal demand, while adjusting our thermal operating plans to
minimize future cash requirements and maintain flexibility to react to short
term market fluctuations. We continue to streamline our entire organizational
structure to reflect our long-term strategic direction as a leading producer of
metallurgical products for the steelmaking industry.



Results of Operations

Three Months Ended March 31, 2021 and 2020

Revenues. Our revenues include sales to customers of coal produced at our operations and coal purchased from third parties. Transportation costs are included in cost of coal sales and amounts billed by us to our customers for transportation are included in revenues.

Coal Sales. The following table summarizes information about our coal sales during the three months ended March 31, 2021 and 2020:




                        Three Months Ended March 31,
                2021         2020        (Decrease) / Increase

                               (In thousands)
Coal sales    $ 357,543    $ 405,232    $              (47,689)
Tons sold        14,042       16,980                    (2,938)




On a consolidated basis, coal sales in the first quarter of 2021 were
approximately $47.7 million or 11.8% less than in the first quarter of 2020,
while tons sold decreased approximately 2.9 million tons or 17.3%. Coal sales
from Metallurgical operations decreased approximately $3.9 million primarily due
to decreased volume. Thermal coal sales decreased approximately $32.7 million
due to decreased volume. In the prior year quarter, our Viper operation, which
was sold in December 2020, provided approximately $9.9 million in coal sales and
0.2 million tons sold. See the discussion in "Operational Performance" for
further information about segment results.

Costs, expenses and other. The following table summarizes costs, expenses and
other components of operating income during the three months ended March 31,
2021 and 2020:


                                                         Three Months Ended March 31,
                                                                                  Increase
                                                                                 (Decrease)
                                                      2021           2020       in Net Income

                                                                 (In thousands)
Cost of sales (exclusive of items shown
separately below)                                  $   309,906    $  374,999     $     65,093
Depreciation, depletion and amortization                25,797        31,308            5,511
Accretion on asset retirement obligations                5,437         5,006            (431)
Change in fair value of coal derivatives and
coal trading activities, net                               528           743              215
Selling, general and administrative expenses            21,480        22,745            1,265
Costs related to proposed joint venture with
Peabody Energy                                               -         3,664            3,664
Asset impairment and restructuring                           -         5,828            5,828
Gain on property insurance recovery related to
Mountain Laurel longwall                                     -       (9,000)          (9,000)


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Other operating income, net (5,268) (6,170) (902) Total costs, expenses and other $ 357,880 $ 429,123 $ 71,243








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Cost of sales. Our cost of sales for the first quarter of 2021 decreased
approximately $65.1 million or 17.4% versus the first quarter of 2020. In the
prior year quarter, our Viper operation, which was sold in December 2020,
accounted for approximately $10.5 million in cost of sales. The decline in cost
of sales at ongoing operations consists primarily of reduced repairs and
supplies costs of approximately $21.7 million, a net positive change in coal
inventory valuation versus the prior year quarter of approximately $11.1
million, an increase in credit for ARO reclamation work completed primarily at
our Thermal operations of approximately $9.1 million, a decrease in purchased
coal cost of approximately $6.9 million, reduced compensation costs of
approximately $6.2 million, and reduced operating taxes and royalties of
approximately $5.4 million. These cost decreases were partially offset by
increased transportation costs of approximately $3.4 million. See discussion in
"Operational Performance" for further information about segment results.



Depreciation, depletion, and amortization. The decrease in depreciation, depletion, and amortization in the first quarter of 2021 versus the first quarter of 2020 is primarily due to the asset impairment we recorded in the third quarter of 2020 in our Thermal segment and a combination of reduced sales volume and lower depletion rates in our Metallurgical segment.



Accretion on asset retirement obligations. The increase in accretion expense in
the first quarter of 2021 versus the first quarter of 2020 is primarily related
to the changes in the planned timing of our reclamation work to be completed at
our Thermal operations, specifically at Coal Creek.

Change in fair value of coal derivatives and coal trading activities, net. The
cost in both the first quarter of 2021 and 2020 is primarily related to
mark-to-market losses on coal derivatives that we had entered into to hedge our
price risk for anticipated international thermal coal shipments.

Selling, general and administrative expenses. Selling, general and
administrative expenses in the first quarter of 2021 decreased versus the first
quarter of 2020 due primarily to decreased compensation costs of approximately
$0.9 million and decreased travel related costs of $0.4 million as we adapted to
the COVID-19 environment.

Costs related to proposed joint venture with Peabody Energy. We incurred
expenses of $3.7 million for the three months ended March 31, 2020 associated
with the regulatory approval process related to the proposed joint venture with
Peabody that was terminated jointly by the parties due to the federal trade
commission blocking the joint venture.

Asset impairment and restructuring. We recorded $5.8 million of employee severance expense related to a voluntary separation plan that was accepted by 53 members of the corporate staff during the three months ended March 31, 2020.


Gain on property insurance recovery related to Mountain Laurel longwall. We
recorded a $9.0 million gain related to a property insurance recovery on the
longwall shields at our Mountain Laurel operation during the three months ended
March 31, 2020.

Other operating income, net. The decrease in other operating income, net in the
first quarter of 2021 versus the first quarter of 2020 consists primarily of the
net unfavorable impact of certain coal derivative settlements of approximately
$1.5 million, partially offset by approximately $1.0 million in unfavorable
mark-to-market of heating oil derivatives in the first quarter of 2020.

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Nonoperating (expenses) income. The following table summarizes our nonoperating (expenses) income during the three months ended March 31, 2021 and 2020:




                                                        Three Months Ended March 31,
                                                                                   Increase
                                                                                  (Decrease)
                                                   2021             2020         in Net Income

                                                                (In thousands)
Non-service related pension and
postretirement benefit costs                   $    (1,527)     $    (1,096)    $         (431)
Reorganization items, net                                 -               26               (26)
Total nonoperating expenses                    $    (1,527)     $    (1,070)    $         (457)



Non-service related pension and postretirement benefit costs. The increase in non-service related pension and postretirement benefit costs in the first quarter of 2021 versus the first quarter of 2020 is primarily due to lower postretirement benefit gain amortization in the first quarter of 2021.



Provision for (benefit from) income taxes. The following table summarizes our
provision for (benefit from) income taxes during the three months ended March
31, 2021 and 2020:


                                                       Three Months Ended March 31,
                                                                                   Increase
                                                                                  (Decrease)
                                                 2021              2020          in Net Income

                                                               (In thousands)

Provision for (benefit from) income taxes $ 378 $ (1,791) $ (2,169)






See Note 12, "Income Taxes," to the Condensed Consolidated Financial Statements
for a reconciliation of the federal income tax provision at the statutory rate
to the actual provision for income taxes.



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Operational Performance

Three Months Ended March 31, 2021 and 2020


On December 31, 2020, we sold our Viper operation. As a result, we revised our
reportable segments beginning in the first quarter of 2021 to better reflect the
manner in which the chief operating decision maker (CODM) views our businesses
going forward for purposes of reviewing performance, allocating resources and
assessing future prospects and strategic execution. Prior to the first quarter
of 2021, we had three reportable segments: MET, Powder River Basin (PRB), and
Other Thermal. After the divestment of Viper, we have three remaining active
thermal mines: West Elk, Black Thunder, and Coal Creek. With two distinct lines
of business, metallurgical and thermal, the movement to two segments better
aligns with how we make decisions and allocate resources. No changes were made
to the MET Segment and the three remaining thermal mines have been combined as
the "Thermal Segment". The prior periods have been restated to reflect the
change in reportable segments.

Our mining operations are evaluated based on Adjusted EBITDA, per-ton cash
operating costs (defined as including all mining costs except depreciation,
depletion, amortization, accretion on asset retirements obligations, and
pass-through transportation expenses, divided by segment tons sold), and on
other non-financial measures, such as safety and environmental performance.
Adjusted EBITDA is defined as net income (loss) attributable to us before the
effect of net interest expense, income taxes, depreciation, depletion and
amortization, the accretion on asset retirement obligations and nonoperating
expenses. Adjusted EBITDA may also be adjusted for items that may not reflect
the trend of future results by excluding transactions that are not indicative of
our core operating performance. Adjusted EBITDA is not a measure of financial
performance in accordance with generally accepted accounting principles, and
items excluded from Adjusted EBITDA are significant in understanding and
assessing our financial condition. Therefore, Adjusted EBITDA should not be
considered in isolation, nor as an alternative to net income (loss), income
(loss) from operations, cash flows from operations or as a measure of our
profitability, liquidity or performance under generally accepted accounting
principles. Furthermore, analogous measures are used by industry analysts and
investors to evaluate our operating performance. Investors should be aware that
our presentation of Adjusted EBITDA may not be comparable to similarly titled
measures used by other companies.

The following table shows results by operating segment for the three months ended March 31, 2021 and March 31, 2020.




                                     Three Months Ended March 31,
                                     2021         2020       Variance
Metallurgical
Tons sold (in thousands)               1,719        1,779         (60)
Coal sales per ton sold           $    83.76    $   82.35    $    1.41
Cash cost per ton sold            $    59.63    $   58.42    $  (1.21)
Cash margin per ton sold          $    24.13    $   23.93    $    0.20
Adjusted EBITDA (in thousands)    $   41,597    $  42,720    $ (1,123)
Thermal
Tons sold (in thousands)              12,292       14,915      (2,623)
Coal sales per ton sold           $    13.16    $   13.41    $  (0.25)
Cash cost per ton sold            $    12.18    $   13.65    $    1.47

Cash margin per ton sold $ 0.98 $ (0.24) $ 1.22 Adjusted EBITDA (in thousands) $ 13,081 $ (1,902) $ 14,983






This table reflects numbers reported under a basis that differs from U.S. GAAP.
See "Reconciliation of Non-GAAP measures" below for explanation and
reconciliation of these amounts to the nearest GAAP measures. Other companies
may calculate these per ton amounts differently, and our calculation may not be
comparable to other similarly titled measures.

Metallurgical - Adjusted EBITDA for the three months ended March 31, 2021 decreased slightly from the three months ended March 31, 2020 due to a small decrease in sales volume, partially offset by a slight increase in cash



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margin per ton sold. While the year over year results are similar, the dynamics
of the periods are very different. The first quarter of 2021 featured improved
economic growth, stable prompt Atlantic basin index prices, and increased steel
demand and pricing. In contrast, the first quarter of 2020 featured declining
pricing and concluded with the initial industrial shutdowns in response to the
emergence of COVID-19.

At the end of the first quarter of 2021, our Leer South longwall development
project remains on schedule, with initial longwall production anticipated in the
third quarter of 2021. All primary longwall equipment has been delivered to the
mine site. The addition of a second longwall operation to our Metallurgical
Segment is expected to significantly increase our volumes and strengthen our low
average segment cost structure.

Our Metallurgical segment sold 1.5 million tons of coking coal and 0.2 million
tons of associated thermal coal in both the three months ended March 31, 2021,
and the three months ended March 31, 2020. Longwall operations accounted for
approximately 58% of our shipment volume in the three months ended March 31,
2021, compared to approximately 65% of our shipment volume in the three months
ended March 31, 2020.

Thermal - Adjusted EBITDA for the three months ended March 31, 2021 increased
versus the three months ended March 31, 2020, due to decreased cash cost per ton
sold, partially offset by decreased volume. The reduction in cash cost per ton
sold is driven by reduced unit cost at our Black Thunder operation, despite
reduced volume, as we have made substantial progress on our efforts to align
production levels with the secular decline in domestic demand. Also,
contributing to the decreases in volume, cost and price is the inclusion of
approximately 0.2 million tons sold from our former Viper operation in the three
months ended March 31, 2020. During the first quarter of 2021 we completed
approximately $10.3 million of Asset Retirement Obligation (ARO) work at our
Thermal operations, compared to $0.6 million during the first quarter of 2020.

On December 31, 2020, we sold our Viper operation in Illinois, to Knight Hawk Holdings, LLC in whom we hold an equity investment.





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Reconciliation of Non-GAAP measures

Segment coal sales per ton sold



Non-GAAP Segment coal sales per ton sold is calculated as segment coal sales
revenues divided by segment tons sold. Segment coal sales revenues are adjusted
for transportation costs, and may be adjusted for other items that, due to
generally accepted accounting principles, are classified in "other income" on
the statement of operations, but relate to price protection on the sale of coal.
Segment coal sales per ton sold is not a measure of financial performance in
accordance with generally accepted accounting principles. We believe segment
coal sales per ton sold provides useful information to investors as it better
reflects our revenue for the quality of coal sold and our operating results by
including all income from coal sales. The adjustments made to arrive at these
measures are significant in understanding and assessing our financial condition.
Therefore, segment coal sales revenues should not be considered in isolation,
nor as an alternative to coal sales revenues under generally accepted accounting
principles.




                                                                            Idle and

Three Months Ended March 31, 2021           Metallurgical      Thermal       Other        Consolidated
(In thousands)
GAAP Revenues in the Condensed
Consolidated Statements of Operations      $       178,781    $ 177,540    $    1,222    $      357,543
Less: Adjustments to reconcile to
Non-GAAP Segment coal sales revenue
Coal risk management derivative
settlements classified in "other
income"                                              (690)          552             -             (138)
Coal sales revenues from idled or
otherwise disposed operations not
included in segments                                     -            -         1,217             1,217
Transportation costs                                35,489       15,167             5            50,661
Non-GAAP Segment coal sales revenues       $       143,982    $ 161,821    $        -    $      305,803
Tons sold                                            1,719       12,292
Coal sales per ton sold                    $         83.76    $   13.16    $





                                                                            Idle and

Three Months Ended March 31, 2020           Metallurgical      Thermal       Other        Consolidated
(In thousands)
GAAP Revenues in the Condensed
Consolidated Statements of Operations      $       182,654    $ 210,196    $   12,382    $      405,232
Less: Adjustments to reconcile to
Non-GAAP Segment coal sales revenue
Coal risk management derivative
settlements classified in "other
income"                                              (261)      (1,328)             -           (1,589)
Coal sales revenues from idled or
otherwise disposed operations not
included in segments                                     -            -        12,349            12,349
Transportation costs                                36,388       11,473            33            47,894
Non-GAAP Segment coal sales revenues       $       146,527    $ 200,051    $        -    $      346,578
Tons sold                                            1,779       14,915
Coal sales per ton sold                    $         82.35    $   13.41




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Segment cash cost per ton sold


Non-GAAP Segment cash cost per ton sold is calculated as segment cash cost of
coal sales divided by segment tons sold. Segment cash cost of coal sales is
adjusted for transportation costs, and may be adjusted for other items that, due
to generally accepted accounting principles, are classified in "other income" on
the statement of operations, but relate directly to the costs incurred to
produce coal. Segment cash cost per ton sold is not a measure of financial
performance in accordance with generally accepted accounting principles. We
believe segment cash cost per ton sold better reflects our controllable costs
and our operating results by including all costs incurred to produce coal. The
adjustments made to arrive at these measures are significant in understanding
and assessing our financial condition. Therefore, segment cash cost of coal
sales should not be considered in isolation, nor as an alternative to cost of
sales under generally accepted accounting principles.


                                                                            Idle and
Three Months Ended March 31, 2021           Metallurgical      Thermal       Other        Consolidated
(In thousands)
GAAP Cost of sales in the Condensed
Consolidated Statements of Operations      $       138,002    $ 164,941    $    6,963    $      309,906
Less: Adjustments to reconcile to
Non-GAAP Segment cash cost of coal
sales
Diesel fuel risk management derivative
settlements classified in "other
income"                                                  -            -             -                 -
Transportation costs                                35,489       15,167             5            50,661
Cost of coal sales from idled or
otherwise disposed operations not
included in segments                                     -            -         5,218             5,218
Other (operating overhead, certain
actuarial, etc.)                                         -            -         1,740             1,740
Non-GAAP Segment cash cost of coal
sales                                              102,513      149,774             -           252,287
Tons sold                                            1,719       12,292
Cash Cost Per Ton Sold                     $         59.63    $   12.18





                                                                            Idle and

Three Months Ended March 31, 2020           Metallurgical      Thermal       Other        Consolidated
(In thousands)
GAAP Cost of sales in the Condensed
Consolidated Statements of Operations      $       140,331    $ 214,387    $   20,281    $      374,999
Less: Adjustments to reconcile to
Non-GAAP Segment cash cost of coal
sales
Diesel fuel risk management derivative
settlements classified in "other
income"                                                  -        (686)             -             (686)
Transportation costs                                36,388       11,473            33            47,894
Cost of coal sales from idled or
otherwise disposed operations not
included in segments                                     -            -        17,885            17,885
Other (operating overhead, certain
actuarial, etc.)                                         -            -         2,363             2,363
Non-GAAP Segment cash cost of coal
sales                                              103,943      203,600             -    $      307,543
Tons sold                                            1,779       14,915
Cash Cost Per Ton Sold                     $         58.43    $   13.65






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Reconciliation of Segment Adjusted EBITDA to Net Income (Loss)


The discussion in "Results of Operations" above includes references to our
Adjusted EBITDA for each of our reportable segments. Adjusted EBITDA is defined
as net income (loss) attributable to us before the effect of net interest
expense, income taxes, depreciation, depletion and amortization, the accretion
on asset retirement obligations and nonoperating expenses. Adjusted EBITDA may
also be adjusted for items that may not reflect the trend of future results by
excluding transactions that are not indicative of our core operating
performance. We use Adjusted EBITDA to measure the operating performance of our
segments and allocate resources to our segments. Adjusted EBITDA is not a
measure of financial performance in accordance with generally accepted
accounting principles, and items excluded from Adjusted EBITDA are significant
in understanding and assessing our financial condition. Therefore, Adjusted
EBITDA should not be considered in isolation, nor as an alternative to net
income (loss), income (loss) from operations, cash flows from operations or as a
measure of our profitability, liquidity or performance under generally accepted
accounting principles. Investors should be aware that our presentation of
Adjusted EBITDA may not be comparable to similarly titled measures used by other
companies. The table below shows how we calculate Adjusted EBITDA.



                                                         Three Months Ended March 31,
                                                           2021                 2020

Net income (loss)                                     $      (6,042)      $       (25,299)

Provision for (benefit from) income taxes                        378       

(1,791)


Interest expense, net                                          3,800       

2,129


Depreciation, depletion and amortization                      25,797       

31,308


Accretion on asset retirement obligations                      5,437       

5,006


Costs related to proposed joint venture with
Peabody Energy                                                     -       

3,664


Asset impairment and restructuring                                 -       

5,828


Gain on property insurance recovery related to
Mountain Laurel longwall                                           -       

(9,000)


Non-service related pension and postretirement
benefit costs                                                  1,527                 1,096
Reorganization items, net                                          -                  (26)
Adjusted EBITDA                                               30,897                12,915

EBITDA from idled or otherwise disposed operations             3,566       

5,099


Selling, general and administrative expenses                  21,480       

22,745


Other                                                        (1,265)                    59

Segment Adjusted EBITDA from coal operations $ 54,678 $


        40,818




Other includes primarily income from our equity investments, certain changes in
fair value of heating oil and diesel fuel derivatives we use to manage our
exposure to diesel fuel pricing, certain changes in the fair value of coal
derivatives and coal trading activities, EBITDA provided by our land company,
and certain miscellaneous revenue.





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Liquidity and Capital Resources


Our primary sources of liquidity are proceeds from coal sales to customers and
certain financing arrangements. Excluding significant investing activity, we
intend to satisfy our working capital requirements and fund capital expenditures
and debt-service obligations with cash generated from operations and cash on
hand. As we continue to evaluate the impacts of COVID-19 and the responses
thereto on our business, we remain focused on prudently managing costs,
including capital expenditures, maintaining a strong balance sheet, and ensuring
adequate liquidity.

Given the volatile nature of coal markets, and the significant challenges and
uncertainty surrounding COVID-19, we believe it is increasingly important to
take a prudent approach to managing our balance sheet and liquidity, as
demonstrated by the suspension of our dividend and share repurchases. Due to the
current economic uncertainties related to COVID-19 and the related disruption in
the financial markets, we may be limited in accessing capital markets or
obtaining additional bank financing or the cost of accessing this financing
could become more expensive. We believe our current liquidity level is
sufficient to fund our business and complete our Leer South development. In the
future, we will continue to evaluate our capital allocation initiatives in light
of the current state of, and our outlook for coal markets; the amount of our
planned production that has been committed and priced; the capital needs of the
business; other strategic opportunities; and developments in the COVID-19
outbreak and the responses thereto.

On March 7, 2017, we entered into a senior secured term loan credit agreement in
an aggregate principal amount of $300 million (the "Term Loan Debt Facility")
with Credit Suisse AG, Cayman Islands Branch, as administrative agent and
collateral agent and the other financial institutions from time to time party
thereto. The Term Loan Debt Facility was issued at 99.50% of the face amount and
will mature on March 7, 2024. The term loans provided under the Term Loan Debt
Facility (the "Term Loans") are subject to quarterly principal amortization
payments in an amount equal to $750,000. Proceeds from the Term Loan Debt
Facility were used to repay all outstanding obligations under our previously
existing term loan credit agreement, dated as of October 5, 2016.

On April 3, 2018, we entered into the Second Amendment (the "Second Amendment")
to the Term Loan Debt Facility. The Second Amendment reduced the interest rate
on the Term Loans to, at our option, either (i) the London interbank offered
rate ("LIBOR") plus an applicable margin of 2.75%, subject to a 1.00% LIBOR
floor, or (ii) a base rate plus an applicable margin of 1.75%. For further
information regarding the Term Loan Debt Facility, see Note 11, "Debt and
Financing Arrangements" to the Condensed Consolidated Financial Statements.

We have entered into a series of interest rate swaps to fix a portion of the
LIBOR interest payments due under the term loan. As interest payments are made
on the term loan, amounts in accumulated other comprehensive income will be
reclassified into earnings through interest expense to reflect a net interest on
the term loan equal to the effective yield of the fixed rate of the swap plus
2.75%, which is the spread on the LIBOR term loan as amended. For further
information regarding the interest rate swaps, see Note 11, "Debt and Financing
Arrangements" to the Condensed Consolidated Financial Statements.

On September 30, 2020, we extended and amended our existing trade accounts
receivable securitization facility provided to Arch Receivable Company, LLC, a
special-purpose entity that is a wholly owned subsidiary of Arch Resources
("Arch Receivable") (the "Extended Securitization Facility"), which supports the
issuance of letters of credit and requests for cash advances. The amendment to
the Extended Securitization Facility changed the facility size from $160 million
to $110 million and extended the maturity date to September 29, 2023.
Additionally, the amendment eliminated the provision that accelerated maturity
of the facility upon falling below a specified level of liquidity and modified
the pricing for the Extended Securitization Facility. Pursuant to the Extended
Securitization Facility, we also agreed to a revised schedule of fees payable to
the administrator and the providers of the Extended Securitization Facility. For
further information regarding the Extended Securitization Facility see Note 11,
"Debt and Financing Arrangements" to the Condensed Consolidated Financial
Statements.

On September 30, 2020, we amended the senior secured inventory-based revolving
credit facility in an aggregate principal amount of $50 million (the "Inventory
Facility") with Regions Bank ("Regions") as administrative agent and collateral
agent, as lender and swingline lender (in such capacities, the "Lender") and as
letter of credit issuer. Availability under the Inventory Facility is subject to
a borrowing base consisting of (i) 85% of the net orderly liquidation value of
eligible coal inventory, (ii) the lesser of (x) 85% of the net orderly
liquidation value of eligible parts

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and supplies inventory and (y) 35% of the amount determined pursuant to clause
(i), and (iii) 100% of our Eligible Cash (defined in the Inventory Facility),
subject to reduction for reserves imposed by Regions. The amendment of the
Inventory Facility extended the maturity date to September 29, 2023, eliminated
the provision that accelerated maturity of the facility upon falling below a
specified level of liquidity, and reduced the minimum liquidity requirement from
$175 million to $100 million. Additionally, the amendment includes provisions
that reduce the advance rates for coal inventory and parts and supplies,
depending on liquidity. For further information regarding the Inventory
Facility, see Note 11, "Debt and Financing Arrangements" to the Condensed
Consolidated Financial Statements.

On July 2, 2020, the West Virginia Economic Development Authority (the "Issuer")
issued $53.1 million aggregate principal amount of Solid Waste Disposal Facility
Revenue Bonds (Arch Resources Project), Series 2020 (the "Bonds") pursuant to an
Indenture of Trust dated as of June 1, 2020 (the "Indenture") between the Issuer
and Citibank, N.A., as trustee (the "Trustee"). As a follow-on to our $53.1
million offering, on March 4, 2021, the Issuer issued an additional $45.0
million in Series 2021 Tax Exempt Bonds. The proceeds of the Bonds are loaned to
us as we make qualifying expenditures pursuant to a Loan Agreement dated as of
June 1, 2020 between the Issuer and us. The Bonds are payable solely from
payments to be made by us under the Loan Agreement as evidenced by a Note from
us to the Trustee. The proceeds of the Bonds were used to finance certain costs
of the acquisition, construction, reconstruction, and equipping of solid waste
disposal facilities at our Leer South development, and for capitalized interest
and certain costs related to issuance of the Bonds. As of March 31, 2021, we
have received $81.8 million of the total bonds issues. The remaining $16.3
million is held in trust and is recorded on our balance sheet as restricted
cash. The remainder of the funds will be released as qualified expenditures are
made over the next several quarters. For further information regarding these
bonds, see Note 11, "Debt and Financing Arrangements" to the Condensed
Consolidated Financial Statements.

On November 3, 2020, we issued $155.3 million in aggregate principal amount
of 5.25% convertible senior notes due 2025 ("Convertible Notes" or "Convertible
Debt"). The net proceeds from the issuance of the Convertible Notes, after
deducting offering related costs of $5.1 million and cost of a capped call
transaction of $17.5 million, were approximately $132.7 million. The Convertible
Notes bear interest at the annual rate of 5.25%, payable semiannually in arrears
on May 15 and November 15 of each year, beginning on May 15, 2021, and will
mature on November 15, 2025, unless earlier converted or repurchased by us. For
further information regarding the Convertible Notes and the capped call
transactions, see Note 11, "Debt and Financing Arrangements" to the Condensed
Consolidated Financial Statements.



On April 27, 2017, our Board of Directors authorized a capital return program
consisting of a share repurchase program and a quarterly cash dividend. The
share repurchase plan has a total authorization of $1.05 billion of which we
have used $827.4 million. During the three months ended March 31, 2021, we did
not repurchase any shares of our stock. On April 23, 2020 we announced the
suspension of our quarterly dividend due to the significant economic uncertainty
surrounding the COVID-19 virus and the steps being taken to control the virus.
During the three months ended March 31, 2021, we did not pay any dividends on
shares of our stock. The timing and amount of any future dividends or of any
future share purchases and the ultimate number of shares to be purchased will
depend on a number of factors, including business and market conditions, our
future financial performance, and other capital priorities. Any shares acquired
would be in the open market or through private transactions in accordance with
Securities and Exchange Commission requirements.

On March 31, 2021 we had total liquidity of approximately $250 million,
including $237 million in unrestricted cash and equivalents, and short term
investments in debt securities, with the remainder provided by availability
under our credit facilities, and funds withdrawable from brokerage accounts. The
table below summarizes our availability under our credit facilities as of March
31, 2021:


                                                                    Letters of
                                                     Borrowing        Credit        Collateral                           Contractual
                                    Face Amount        Base        Outstanding        Posted        Availability          Expiration
                                                                           (Dollars in thousands)
Securitization Facility            $     110,000    $    55,700    $     58,323    $      2,623    $            -      September 29, 2023
Inventory Facility                        50,000         41,256          29,196               -            12,060      September 29, 2023
Total                              $     160,000    $    96,956    $     87,519    $      2,623    $       12,060




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The above standby letters of credit outstanding have primarily been issued to
satisfy certain insurance-related collateral requirements. The amount of
collateral required by counterparties is based on their assessment of our
ability to satisfy our obligations and may change at the time of policy renewal
or based on a change in their assessment. Future increases in the amount of
collateral required  by counterparties would reduce our available liquidity.

The following is a summary of cash provided by or used in each of the indicated types of activities during the three months ended March 31, 2021 and 2020:





                                  2021          2020
(In thousands)
Cash provided by (used in):
Operating activities           $    5,686    $ (12,035)
Investing activities             (42,765)      (74,880)
Financing activities               32,189        39,052




Cash Flow

Cash was provided by operating activities in the three months ended March 31,
2021 versus cash used in the three months ended March 31, 2020 mainly due to the
improvement in results from operations discussed in the "Overview" and
"Operational Performance" sections above. Both the current and prior quarters
had significant increases in working capital requirements due to increases in
inventories in both quarters, and receivables in the three months ended March
31, 2021, and a decrease in payables in the three months ended March 31, 2020.

Cash used in investing activities decreased in the three months ended March 31,
2021 versus the three months ended March 31, 2020 primarily due to an
approximately $29 million increase in net proceeds from short term investments,
and a reduction in capital expenditures of approximately $11 million, partially
offset by approximately $7 million in property insurance proceeds on our
Mountain Laurel longwall claim in the three months ended March 31, 2020. Capital
spending in the three months ended March 31, 2021 includes approximately $60
million related to our Leer South mine development and approximately $6 million
in capitalized interest.

Cash provided by financing activities decreased in the three months ended March
31, 2021 compared to the three months ended March 31, 2020 primarily due to
proceeds of approximately $54 million from our Equipment Financing in the first
quarter of 2020 and approximately $4 million more in net payments on other debt
in the first quarter of 2021, partially offset by approximately $45 million in
proceeds from our follow on issuance of Tax Exempt Bonds in the first quarter of
2021 and a dividend payment of approximately $8 million in the first quarter of
2020. For further information regarding the Equipment Financing arrangement and
Tax Exempt Bonds, see Note 11, "Debt and Financing Arrangements" to the
Condensed Consolidated Financial Statements.





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