FORWARD-LOOKING STATEMENTS.

Any statements contained in this Report that are not statements of historical fact are forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. Forward-looking statements in this Report, including without limitation statements relating to the Company's plans, strategies, objectives, expectations, intentions and adequacy of resources, are identified by such words as "will," "could," "should," "would," "believe," "possible," "potential," "expect," "intend," "plan," "schedule," "estimate," "anticipate" and "project." The Company undertakes no obligation to publicly update or revise any forward-looking statements. The Company cautions that forward-looking statements involve risks and uncertainties that could cause actual results to differ materially from expectations, including without limitation the following: (i) the Company's plans, strategies, objectives, expectations, and intentions are subject to change at any time at the Company's discretion; (ii) the Company's plans and results of operations will be affected by its ability to maintain and increase its revenues and manage its growth; (iii) the Company's ability to meet short-term and long-term liquidity demands, including meeting the Company's operating and capital needs, including possible acquisitions and paying dividends, and conditions in the credit and equity markets, including the ability of the Company's customers to meet their obligations; (iv) interruptions to operations and increased expenses at the Company's facilities resulting from changes in mining methods or conditions, variability of chemical or physical properties of the



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Company's limestone and its impact on process equipment and product quality, inclement weather conditions, natural disasters, accidents, IT systems failures or disruptions, including due to cyber-security incidents or ransomware attacks, utility disruptions, or regulatory requirements; (v) volatile coal, petroleum coke, diesel, natural gas, electricity, transportation and freight costs and the consistent availability of trucks, truck drivers and rail cars to deliver the Company's products to its customers and solid fuels to its plants on a timely basis at competitive prices; (vi) unanticipated delays or cost overruns in completing modernization and expansion and development projects; (vii) the Company's ability to expand its lime and limestone operations through projects and acquisitions of businesses with related or similar operations, including the Carthage acquisition, and the Company's ability to obtain any required financing for such projects and acquisitions, and to sell any resulting increased production at acceptable prices; (viii) inadequate demand and/or prices for the Company's lime and limestone products due to increased competition from competitors, increasing competition for certain customer accounts, conditions in the U.S. economy, recessionary pressures in, and the impact of government policies on, particular industries, including oil and gas services, utility plants, steel, construction, and industrial, effects of governmental fiscal and budgetary constraints, including the level of highway construction and infrastructure funding, changes to tax law, legislative impasses, extended governmental shutdowns, trade wars, tariffs, economic and regulatory uncertainties under state governments and the recently elected United States Administration and Congress, and inability to continue to maintain or increase prices for the Company's products, including passing through the increased costs of transportation; (ix) ongoing and possible new regulations, investigations, enforcement actions and costs, legal expenses, penalties, fines, assessments, litigation, judgments and settlements, taxes and disruptions and limitations of operations, including those related to climate change, health and safety, and other ESG and sustainability considerations, and those that could impact the Company's ability to continue or renew its operating permits or successfully secure new permits in connection with its modernization and expansion and development projects; (xi) estimates of reserves and remaining lives of reserves; (xii) the ongoing impact of the COVID-19 pandemic, including decreased demand, lower prices, and increased costs, and the risk of non-compliance with health and safety protocols and social distancing guidelines, on the Company's financial condition, results of operations, cash flows, and competitive position; (xiii) the impact of social or political unrest; (xiv) risks relating to mine safety, and reclamation and remediation; and (xv) other risks and uncertainties set forth in this Report or indicated from time to time in the Company's filings with the Securities and Exchange Commission (the "SEC"), including the Company's Quarterly Reports on Form 10-Q.

OVERVIEW.

General.

We have identified one reportable business segment based on the distinctness of our activities and products: Lime and Limestone Operations. All operations are in the United States. Operating profit from our Lime and Limestone Operations includes all of our selling, general and administrative costs. We do not allocate interest expense and interest and other income to our Lime and Limestone Operations.

Our Lime and Limestone Operations represent our principal business. Our Other revenues are from natural gas interests, consisting of royalty and non-operated working interests under an oil and gas lease and a drillsite agreement with two separate operators related to our Johnson County, Texas property, located in the Barnett Shale Formation, on which Texas Lime conducts its lime and limestone operations. While we may participate in future natural gas wells drilled and workovers of existing wells under the oil and gas lease and drillsite agreement, if any, we are not in the business of drilling for or producing natural gas and have no personnel with expertise in that field.

On July 1, 2020, we acquired Carthage, a limestone mining and production company located in Carthage, Missouri, for $8.4 million cash, subject to adjustment for working capital balances acquired. Carthage provides aggregate and pulverized limestone products that are used primarily in the agricultural, construction, roofing and industrial industries. Carthage's assets and liabilities are included on our December 31, 2020 balance sheet at fair values, with $7.5 million allocated to property, plant and equipment. Carthage contributed $4.6 million to our revenues in 2020. We believe that this acquisition complements our existing geographic footprint.

In the fourth quarters 2020 and 2019, we recognized impairment charges of $1.6 million ($1.2 million, net of tax) and $0.9 million ($0.7 million, net of tax), respectively, related to our natural gas interests. Continuing low prices for natural gas and natural gas liquids have reduced the estimates for future economically feasible production from our



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drilled wells, which has impaired the recoverability of the assets as they approach the end of their useful lives. The carrying values of the long-lived assets related to our natural gas interests were $2.0 million as of December 31, 2020.

Revenues increased 1.5% in 2020 compared to 2019. Revenues from our Lime and Limestone Operations increased 1.7% in 2020, compared to 2019, primarily due to the addition of limestone sales by Carthage to agriculture and roofing customers, and increased sales to the Company's construction customers, partially offset by decreased demand from the Company's oil and gas services, environmental and steel customers. Revenues in 2020 were also favorably impacted by an increase in average selling prices for our lime and limestone products of 3.6%.

Gross profit increased 14.2% in 2020 compared to 2019. Gross profit from our Lime and Limestone Operations in 2020 increased 14.1%, compared to 2019, primarily due to increases in the average selling prices for our lime and limestone products, lower fuel costs, and increased operating efficiencies associated, in part, with our new, fuel-efficient kiln at our St. Clair facility, which began producing commercially saleable quicklime in the second quarter 2019, partially offset by increased costs incurred in 2020 associated with responding to the COVID-19 pandemic.

Interest expense remained flat at $0.2 million for each of 2020 and 2019. Interest and other income, net, decreased $1.4 million in 2020, or 76.2%, compared to 2019, primarily due to decreased interest rates received on our cash and cash equivalents balances in 2020.

Net income increased $2.2 million, or 8.3%, in 2020, compared to 2019. Net income per fully diluted share increased to $5.00 in 2020, compared to $4.64 in 2019. Cash flows from operations enabled us to make $17.1 million of capital investments, including our acquisition of Carthage for $8.4 million. It also enabled us to pay $3.6 million in dividends and increase our cash balances to $83.6 million as of December 31, 2020, compared to $54.3 million as of December 31, 2019. As of December 31, 2020, we had no debt outstanding.

On January 29, 2021, we announced that our Board of Directors had declared a regular quarterly cash dividend of $0.16 (16 cents) per share. The dividend is payable on March 12, 2021 to shareholders of record on February 19, 2021.

Absent a significant acquisition opportunity arising during 2021, we anticipate funding our operating and capital needs and our quarterly cash dividend from our cash balances on hand and cash flows from operations.

Lime and Limestone Operations.

In our Lime and Limestone Operations, we produce and sell PLS, aggregate, quicklime, hydrated lime and lime slurry. The principal factors affecting our success are the level of demand and prices for our products and whether we are able to maintain sufficient production levels and product quality while controlling costs.

Inclement weather conditions, such as winter ice and snow storms, cold weather, hurricanes, tornadoes and excessive rainfalls generally reduce the demand for lime and limestone products supplied to construction-related customers that account for a significant amount of our revenues. Inclement weather also interferes with our open-pit mining operations and can disrupt our plant production. In addition to weather, various maintenance, environmental, accident and other operational and construction issues can also disrupt our operations and increase our operating expenses.

Demand for our products in our market areas is also affected by general economic conditions, the pace of construction, the demand for steel, the level of oil and gas drilling in our markets, the level of governmental and private funding for highway construction and infrastructure and utility plant usage of coal for power generation. Demand for our lime and limestone products from our construction customers increased in 2020. However, demand for our lime and limestone products from our oil and gas services, environmental and steel customers decreased. Oil prices declined sharply in 2020 compared to 2019, which resulted in a curtailment of drilling activities during 2020 and lower demand from our oil and gas services customers.

The emergence of COVID-19 in the United States in the first quarter 2020 created significant volatility, uncertainty and economic disruption to the general business environment. Federal, state, and local governmental responses to the COVID-19 pandemic, which include restrictions requiring social distancing and restrictions on business activities and movement of people in the markets for our lime and limestone products, began to take effect the last two



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weeks of March 2020 and continue in effect in many of the Company's markets. In the second quarter 2020, the pandemic and related restrictions on business activities resulted in a general economic slowdown, which has disproportionately impacted certain industries that purchase our lime and limestone products, including oil and gas services mentioned above, environmental and steel. Late in 2020, we saw indications that demand from our environmental and steel customers was returning, however, multiple recent surges of COVID-19 cases could impact the renewed demand from such customers and the economic recovery that has occurred to date. Until there are successful implementations of COVID-19 vaccination programs, we expect a continued slowdown in economic activity as restrictions continue or even expand, which we anticipate may continue to have an adverse impact on the demand for our lime and limestone products, particularly with respect to our customers in certain industries, and put downward pressure on the prices that we are able to realize for our products, as well as increase our costs.

In 2014 and 2015, Texas approved two constitutional amendments authorizing a portion of oil and gas tax revenues to be deposited into the State Highway Fund, for certain other sales and use tax revenues to be directed to the State Highway Fund and, beginning in Texas' fiscal 2020, for certain state motor vehicle sales and rental tax revenues to be directed to the State Highway Fund. Through November 2020, the Texas State Highway Fund received approximately $15.7 billion in revenues from these two amendments. With these State funding improvements, along with the focus on infrastructure investment proposed by the new federal Administration, we would expect to see increases in demand from our construction customers, but the timing of any demand increase is uncertain and subject to weather, political, and other factors.

Our modernization and expansion and development projects in Texas, Arkansas and Oklahoma and our Texas slurry operations have positioned us to meet the demand for high-quality lime and limestone products in our markets. Our modernization and expansion and development projects have also equipped us with up-to-date, fuel-efficient plant facilities, which have resulted in lower production costs and greater operating efficiencies, thus enhancing our competitive position. All our rotary kilns are now fuel-efficient preheater kilns. The addition of the kiln at St. Clair, which began producing commercially saleable quicklime in the second quarter 2019, further increased the fuel efficiency of our fleet of kilns.

For our plants to operate at peak efficiency, we must meet operational challenges that arise from time to time, including bringing new facilities on-line and refurbishing and/or improving acquired facilities, including the facilities acquired as a result of the Carthage acquisition, as well as operating existing facilities efficiently. We also incur ongoing costs for maintenance and to remain in compliance with rapidly changing Environmental Laws and health and safety and other regulations.

Our primary variable cost is energy. Prices for coal, petroleum coke, diesel, natural gas, electricity, transportation and freight are volatile. In addition, our freight costs, including diesel prices, to deliver our products can be high relative to the value of our products. We have been able to mitigate to some degree the adverse impact of volatile energy costs by varying the mixes of fuel used in our kilns, and by passing on some of any increase in costs to our customers, where possible, through higher prices and/or surcharges on certain products. In addition, as noted above, we put a more fuel-efficient kiln in service at St. Clair, which should help us better manage our energy costs at that plant. Finally, we have not engaged in any significant hedging activity in an effort to control our energy costs but may do so in the future.

We have financed our modernization and expansion and development projects and acquisitions through a combination of debt financing, which has now been repaid, and cash flows from operations. We must generate sufficient cash flows to cover ongoing capital requirements, including current and possible future modernization and expansion and development projects and acquisitions, or borrow sufficient funds to finance any shortfall in our liquidity needs.

For us to maintain or increase our profitability in our Lime and Limestone Operations in the face of reduced demand from some of our customers, competitive pressures and increased costs, we must maintain or increase our customer base, improve our revenues and control our operational and selling, general and administrative expenses. To maintain or improve our gross profit margins, we are focusing on maintaining, and increasing where possible, our lime and limestone prices to offset our increased costs, which is a challenging task with increased competition from other lime and limestone producers. In addition, we will continue to explore ways to increase the operating efficiency of our plants and other facilities and expand our production capacity through acquisitions as conditions warrant or opportunities arise.



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We continue to believe the enhanced efficiency and production capacity resulting from our modernization and expansion and development projects in Texas, Arkansas, and Oklahoma, our expanded slurry operations, our acquisitions, including the recent acquisition of Carthage, and the operational strategies we have implemented have allowed us to increase our efficiency, grow production capacity, improve product quality, better serve existing customers, attract new customers and control costs. To date, however, demand and prices for our lime and limestone products have not been sufficient to fully utilize our additional production capacity. In addition, there can be no assurance that our efficiency and production will not be adversely affected by weather, maintenance, environmental, accident, cyber-security and other operational and construction issues; that we can successfully invest in improvements to our existing facilities; that our results will not be adversely affected by increases in fuel, natural gas, electricity, transportation and freight costs, taxes or new environmental, health and safety or other regulatory requirements; or that, with increasing competition with other lime and limestone producers, our revenues, gross profit, net income and cash flows can be maintained or improved.

Other.

Revenues in 2020 included $1.0 million from our natural gas interests, compared to $1.3 million and $2.5 million in 2019 and 2018, respectively. Gross profit (loss) in 2020 included a loss of $(0.4) million from our natural gas interests, compared to a loss of $(0.4) million in 2019 and profit of $1.0 million in 2018. Impairment charges relating to our natural gas interests of $1.6 million and $0.9 million in 2020 and 2019, respectively, adversely impacted our operating profit. The impairment charges are included with other operating profit (loss) in our segment disclosures. See Note 11 to the Notes to the Consolidated Financial Statements.

CRITICAL ACCOUNTING POLICIES.

The discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States of America ("US GAAP"). The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosures of contingent assets and liabilities, at the date of our financial statements. Actual results may differ from these estimates and judgments under different assumptions or conditions and historical trends.

Critical accounting policies are defined as those that are reflective of significant management judgments and uncertainties and potentially result in materially different results under different assumptions and conditions. We believe the following critical accounting policies require the most significant management estimates and judgments used in the preparation of our consolidated financial statements.

Revenue recognition. We recognize revenue for our Lime and Limestone Operations when (i) a contract with the customer exists and the performance obligations are identified; (ii) the price has been established; and (iii) the performance obligations have been satisfied, which is generally upon shipment. Revenues include external freight billed to customers with related costs accounted for as fulfillment costs and included in cost of revenues. Our returns and allowances are minimal. External freight billed to customers included in revenues was $28.4 million, $28.4 million and $25.6 million for 2020, 2019 and 2018, respectively, which approximates the amount of external freight included in cost of revenues. Sales taxes billed to customers are not included in revenues. For our natural gas interests, we recognize revenue in the month of production and delivery.

We operate our Lime and Limestone Operations within a single geographic region and derive all revenues from that segment from the sale of lime and limestone products. See Note 11 for disaggregation of revenues by the Lime and Limestone Operations segment and Other, which we believe best depicts how the nature, amount, timing and uncertainty of revenues and cash flows are affected by economic factors.

Accounts receivable. The majority of our trade accounts receivable are unsecured. Payment terms for all trade receivables are based on the underlying purchase orders, contracts, or purchase agreements. We estimate credit losses relating to trade receivables based on an assessment of the current and forecasted probability of collection, historical trends, economic conditions, and other significant events that may impact the collectability of accounts receivables. Due to the relatively homogenous nature of its trade receivables, the Company does not believe there is any meaningful asset-specific differences within its accounts receivable portfolio that would require the portfolio to be grouped below the



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consolidated level for review of credit losses. Credit losses relating to trade receivables have generally been within management expectations and historical trends. Uncollected trade receivables are charged-off when identified by management to be unrecoverable. The Company maintains an allowance for credit losses to reflect currently expected estimated losses resulting from the failure of customers to make required payments. A considerable amount of judgment is required in assessing the ultimate realization of these receivables and determining our allowance for doubtful accounts.

Property, plant and equipment. For major constructed assets, we include the costs for labor and materials plus interest and internal and external project management costs that are directly related to the constructed assets in the capitalized cost. Depreciation of property, plant and equipment is being provided for by the straight-line method over estimated useful lives.

We expense all exploration costs as incurred as well as costs incurred at an operating quarry or mine, other than capital expenditures and inventory. Costs to acquire mineral reserves or mineral interests are capitalized upon acquisition. Development costs incurred to develop new mineral reserves, to expand the capacity of a quarry or mine, or to develop quarry or mine areas substantially in advance of current production are capitalized once proven and probable reserves exist and can be economically produced. For each quarry or mine, capitalized costs to acquire and develop mineral reserves are depleted using the units-of-production method based on the proven and probable reserves for such quarry or mine.

We review long-lived assets for impairment and, when events or circumstances indicate the carrying amount of an asset may not be recoverable, we determine if impairment of value exists. If the estimated undiscounted future net cash flows are less than the carrying amount of the asset, an impairment exists, and an impairment loss must be calculated and recorded. If an impairment exists, the impairment loss is calculated based on the excess of the carrying amount of the asset over the asset's fair value. Any impairment loss is treated as a permanent reduction in the carrying value of the asset. During 2020 and 2019, we recognized impairment charges of $1.6 million and $0.9 million, respectively, to adjust the carrying value of certain long-lived assets related to our natural gas interests.

Environmental costs and liabilities. We record environmental accruals, including accrued reclamation costs, in other liabilities, based on studies and estimates, when it is probable we have incurred a reasonably estimable cost or liability. The accruals are adjusted when further information warrants an adjustment. Environmental expenditures that extend the life, increase the capacity or improve the safety or efficiency of Company-owned assets or are incurred to mitigate or prevent future possible environmental issues are capitalized. Other environmental costs are expensed when incurred.

Contingencies. We are party to proceedings, lawsuits and claims arising in the normal course of business relating to regulatory, labor, product and other matters. We are required to estimate the likelihood of any adverse judgments or outcomes with respect to these matters, as well as potential ranges of possible losses. A determination of the amount of reserves required, if any, for these contingencies is made after careful analysis of each individual matter, including coverage under our insurance policies. This determination may change in the future because of new information or developments.

Income taxes. We utilize the asset and liability approach in reporting our income taxes. Deferred income tax assets and liabilities are computed for differences between the financial statement and tax bases of assets and liabilities that will result in taxable or deductible amounts in the future based on enacted tax laws and rates applicable to the periods in which the differences are expected to affect taxable income. We establish valuation allowances when necessary to reduce deferred tax assets to the amount more likely than not to be realized. Income tax related interest and penalties are included in income tax expense. We also assess individual tax positions to determine if they meet the criteria for some or all of the benefits of that position to be recognized in our financial statements and only recognize tax positions that meet the more-likely-than-not recognition threshold.

Stock-based compensation. We expense all stock-based payments to employees and directors, including grants of stock options and restricted stock, in our Consolidated Statements of Income based on their fair values. Compensation cost is recognized ratably over the vesting period for all stock-based awards.



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RESULTS OF OPERATIONS.

The following table sets forth certain financial information expressed as a percentage of revenues for the periods indicated:




                                                  Year Ended December 31,
                                                 2020       2019      2018
Lime and limestone revenues                        99.4 %    99.2 %    98.3 %
Other revenues                                      0.6       0.8       1.7
Total revenues                                    100.0     100.0     100.0
Cost of revenues
Labor and other operating expenses               (58.3)    (62.6)    (66.9)

Depreciation, depletion and amortization (12.1) (11.0) (12.0) Gross profit

                                       29.6      26.4      21.1

Selling, general and administrative expenses (7.6) (7.3) (7.3) Impairment of long lived assets

                   (0.9)     (0.6)         -
Operating profit                                   21.1      18.5      13.8
Other (expense) income:
Interest expense                                  (0.2)     (0.1)     (0.2)
Interest and other income, net                      0.3       1.2       1.3
Income tax expense                                (3.6)     (3.1)     (1.3)
Net income                                         17.6 %    16.5 %    13.6 %


                                 2020 vs. 2019

Revenues for 2020 increased to $160.7 million from $158.3 million in 2019, an increase of $2.4 million, or 1.5%. Revenues from our Lime and Limestone Operations in 2020 increased $2.7 million, or 1.7%, to $159.7 million from $157.0 million in 2019. The increase in revenues from our Lime and Limestone Operations was primarily due to the addition of limestone sales by Carthage to agriculture and roofing customers and increased sales volumes of our lime and limestone products, principally to our construction customers, partially offset by decreased demand from our oil and gas services, environmental and steel customers. In addition, we realized a 3.6% average increase in prices for our lime and limestone products in 2020, compared to 2019. Other revenues included $1.0 million and $1.3 million in 2020 and 2019, respectively, from our natural gas interests.

Our gross profit increased to $47.6 million for 2020 from $41.7 million for 2019, an increase of $5.9 million, or 14.2%. Gross profit from our Lime and Limestone Operations for 2020 was $48.0 million, compared to $42.0 million in 2019, an increase of $5.9 million, or 14.1%. The increase in gross profit in 2020, compared to 2019, resulted primarily from increases in the average selling prices for the Company's lime and limestone products, lower fuel costs and increased operating efficiencies associated, in part, with the kiln at the Company's St. Clair facility, which began producing commercially saleable quicklime in the second quarter 2019, partially offset by increased costs incurred in the 2020 periods associated with responding to the COVID-19 pandemic. Gross profit also included the impact of a $(0.4) loss in each of 2020 and 2019 from our natural gas interests.

Selling, general and administrative expenses ("SG&A") increased to $12.2 million for 2020, an increase of $0.7 million, or 5.8%, compared to $11.5 million for 2019. As a percentage of revenues, SG&A was 7.6% for 2020, compared to 7.3% in 2019. The increase in SG&A was primarily due to increased personnel expenses, including stock-based compensation which was principally due to higher prices for the Company's common stock, and increased legal expenses and COVID-19 pandemic costs in the second quarter 2020.

In the fourth quarters 2020 and 2019, we recognized an impairment charge of $1.6 million ($1.2 million, net of tax) and $0.9 million ($0.7 million, net of tax), respectively. Continuing low prices for natural gas and natural gas liquids have reduced the estimates for future economically feasible production, which has impaired the recoverability of the



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assets as they approach the end of their useful lives. The carrying values of the long-lived assets of the Company's natural gas interests were $2.0 million at December 31, 2020

Interest expense was $0.2 million in each of 2020 and 2019, as we had no outstanding debt during either 2020 or 2019.

Interest and other income, net was $0.5 million in 2020, compared to $1.9 million in 2019. The decrease in interest and other income, net in 2020, compared to 2019, was primarily due to decreased interest rates received on cash and cash equivalents balances in 2020.

Income tax expense was $5.8 million in 2020, for an effective rate of 17.2%, compared to $4.8 million in 2019, for an effective rate of 15.7%, an increase of $1.0 million, primarily due to the increase in income before taxes in 2020, compared to 2019. Our effective income tax rates for 2020 and 2019 were reduced from the statutory rate primarily due to statutory depletion in excess of cost depletion. In addition, for 2019, our effective tax rate was reduced as a result of research and development tax credits.

Net income increased to $28.2 million ($5.00 per share diluted) in 2020, compared to $26.1 million ($4.64 per share diluted) in 2019, an increase of $2.2 million, or 8.3%.



                                 2019 vs. 2018

Revenues for 2019 increased to $158.3 million from $144.4 million in 2018, an increase of $13.8 million, or 9.6%. Revenues from our Lime and Limestone Operations in 2019 increased $15.1 million, or 10.6%, to $157.0 million from $141.9 million in 2018. The increase in revenues from our Lime and Limestone Operations was primarily due to increased sales volumes of our lime and limestone products, principally to our construction and environmental customers. In addition, we realized a 2.0% average increase in prices for our lime and limestone products in 2019, compared to 2018. Other revenues included $1.3 million and $2.5 million in 2019 and 2018, respectively, from our natural gas interests.

Our gross profit increased to $41.7 million for 2019 from $30.5 million for 2018, an increase of $11.2 million, or 36.7%. Gross profit from our Lime and Limestone Operations for 2019 was $42.0 million, compared to $29.5 million in 2018, an increase of $12.6 million, or 42.6%. The increase in gross profit in 2019, compared to 2018, resulted primarily from increased revenues discussed above, lower fuel costs and increased operating efficiencies associated with the kiln at our St. Clair facility, which began producing commercially saleable quicklime in the second quarter 2019. Gross profit also included the impact of a $(0.4) loss in 2019 and $1.0 million profit in 2018 from our natural gas interests.

SG&A increased to $11.5 million for 2019, an increase of $1.0 million, or 9.7%, compared to $10.5 million for 2018. As a percentage of revenues, SG&A was 7.3% in each of 2019 and 2018. The increase in SG&A was primarily due to increased compensation-related and legal expenses in 2019, compared to 2018.

In the fourth quarter 2019, we recognized an impairment charge of $0.9 million ($0.7 million, net of tax) to adjust the carrying values of the long-lived assets related to our natural gas interests. Prices for natural gas and natural gas liquids decreased substantially during 2019, compared to 2018, which led to the impairment of the assets.

Interest expense was $0.2 million in each of 2019 and 2018, as we had no outstanding debt during either 2019 or 2018.

Interest and other income, net was $1.9 million in 2019, compared to $1.8 million in 2018. The increase in interest and other income, net in 2019, compared to 2018, was primarily due to increased interest rates received on cash and cash equivalents balances in 2019.

Income tax expense was $4.8 million in 2019, for an effective rate of 15.7%, compared to $1.9 million in 2018, for an effective rate of 8.7%, an increase of $3.0 million. Our effective income tax rates for 2019 and 2018 were reduced from the statutory rate primarily due to research and development tax credits and statutory depletion in excess of cost depletion.



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Net income increased to $26.1 million ($4.64 per share diluted) in 2019, compared to $19.7 million ($3.51 per share diluted) in 2018, an increase of $6.4 million, or 32.4%.

FINANCIAL CONDITION.

Capital Requirements. We require capital primarily for normal recurring capital and re-equipping projects, modernization and expansion and development projects and acquisitions. Our capital needs are expected to be met principally from cash on hand, cash flows from operations and our $75.0 million revolving credit facility.

We expect to spend approximately $14.0 million per year over the next several years in our Lime and Limestone Operations for normal recurring capital and re-equipping projects at our plants and facilities to maintain or improve efficiency, ensure compliance with Environmental Laws, meet customer needs and reduce costs. As of December 31, 2020, we had $5.0 million in open orders or contractual commitments for our Lime and Limestone Operations.

Liquidity and Capital Resources. Net cash provided by operating activities was $58.6 million in 2020, compared to $47.0 million in 2019, an increase of $11.6 million, or 24.6%. Our net cash provided by operating activities is composed of net income, depreciation, depletion and amortization ("DD&A"), other non-cash items included in net income and changes in working capital. In 2020, net cash provided by operating activities was principally composed of $28.2 million net income, $19.6 million DD&A, $4.3 million increase in deferred income taxes, $1.6 million impairment of long-lived assets, $1.9 million stock-based compensation, and a $2.5 million increase from changes in working capital. In 2020, the changes in working capital were principally composed of a $2.9 million increase in accounts payable, accrued expense and other liabilities, and a $1.1 million decrease in trade receivables, net, partially offset by a $1.4 million increase in inventories. In 2019, net cash provided by operating activities was principally composed of $26.1 million net income, $17.6 million DD&A, $4.9 million increase in deferred income taxes, $0.9 million impairment of long-lived assets, and $1.5 million stock-based compensation, partially offset by a $4.4 million decrease from changes in working capital. In 2019, the changes in working capital were principally composed of a $3.3 million increase in trade receivables, net.

Net cash used in investing activities was $25.2 million for 2020, compared to $26.5 million for 2019. Net cash used in investing activities included $8.4 million for the acquisition of Carthage and $17.1 million for the purchase of property, plant and equipment for 2020, including $2.7 million for the Carthage location and $2.1 million for specialized equipment at the Batesville Quarry. Net cash used in investing activities for 2019 was primarily $27.1 million for the purchase of property, plant and equipment. Net cash used in investing activities in 2019 included $8.0 million for specialized equipment at the Batesville Quarry, $5.6 million for the St. Clair kiln project, and $2.8 million for a new slurry terminal in the Dallas-Fort Worth area. The balance of net cash used in investing activities in 2020 and 2019 was primarily for normal recurring capital and re-equipping projects at our plants and facilities.

Net cash used in financing activities primarily consisted of $3.6 million for dividend payments and $0.6 million to repurchase shares of our common stock in 2020, compared to $33.1 million for dividend payments in 2019, including a special cash dividend of $30.0 million, and $0.4 million to repurchase shares of our common stock.

Our cash and cash equivalents at December 31, 2020 increased to $83.6 million from $54.3 million at December 31, 2019.

Banking Facilities and Debt. Our credit agreement with Wells Fargo Bank, N.A. (the "Lender"), as amended as of May 2, 2019 and November 21, 2019, provides for a $75 million revolving credit facility (the "Revolving Facility") and an incremental four-year accordion feature to borrow up to an additional $50 million on the same terms, subject to approval by the Lender or another lender selected by us. The credit agreement also provides for a $10 million letter of credit sublimit under the Revolving Facility. The Revolving Facility and any incremental loans mature on May 2, 2024.

Interest rates on the Revolving Facility are, at our option, LIBOR plus a margin of 1.000% to 2.000%, or the Lender's Prime Rate plus a margin of 0.000% to 1.000%; and a commitment fee range of 0.200% to 0.350% on the undrawn portion of the Revolving Facility. The Revolving Facility interest rate margins and commitment fee are determined quarterly in accordance with a pricing grid based upon our Cash Flow Leverage Ratio, defined as the ratio of



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the Company's total funded senior indebtedness to earnings before interest, taxes, depreciation, depletion, amortization and stock-based compensation expense ("EBITDA") for the 12 months ended on the last day of the most recent calendar quarter, plus pro forma EBITDA from any businesses acquired during the period. Pursuant to a security agreement, dated August 25, 2004, the Revolving Facility is secured by the Company's existing and hereafter acquired tangible assets, intangible assets and real property. The maturity of the Revolving Facility and any incremental loans can be accelerated if any event of default, as defined under the credit agreement, occurs. Our maximum Cash Flow Leverage Ratio is 3.50 to 1.

We may pay dividends so long as we remain in compliance with the provisions of our credit agreement, and may purchase, redeem or otherwise acquire shares of our common stock so long as our pro forma Cash Flow Leverage Ratio is less than 3.00 to 1.00 and no default or event of default exists or would exist after giving effect to such stock repurchase.

We had no debt outstanding as of December 31, 2020 or 2019. We had $0.4 million of letters of credit issued under the Revolving Facility as of December 31, 2020, which count as draws against the available commitment under the Revolving Facility.

Common Stock Buybacks. We spent $0.6 million, $0.4 million and $0.4 million in 2020, 2019 and 2018, respectively, to repurchase treasury shares tendered for payment of the exercise price for stock options and the tax withholding liability upon the lapse of restrictions on restricted stock.

Contractual Obligations. The following table sets forth our contractual obligations as of December 31, 2020 (in thousands):




                                                        Payments Due by Period
                                                                                         More Than
Contractual Obligations               Total      1 Year    2 - 3 Years    4 - 5 Years     5 Years
Debt                                 $      -         -              -              -            -
Operating leases(1)                  $  2,291     1,130            897            210           54
Limestone mineral leases             $  1,809        88            176            175        1,370
Purchase obligations(2)(3)           $  9,155     7,112          1,532            511            -
Other liabilities                    $  1,482       120            248            245          869
Total                                $ 14,737     8,450          2,853          1,141        2,293

Represents operating leases for railcars, corporate office space and some (1) equipment that are either non-cancelable or subject to significant penalty

upon cancellation.

(2) Of these obligations, $380 were recorded on the Consolidated Balance Sheet at

December 31, 2020.


    Purchase obligations includes enforceable agreements to purchase goods or

services that specify all significant terms, including fixed or minimum (3) quantities to be purchased, generally pertaining to fuel contracts,


    fixed-price provisions, and the approximate timing of the transaction, and
    are either non-cancelable or subject to significant penalty upon
    cancellation.

Absent a significant acquisition, we believe that cash on hand and cash flows from operations will be sufficient to meet our operating needs, ongoing capital needs, including our current and possible future modernization and expansion and development projects, and liquidity needs and allow us to pay our regular cash dividends for the near future.

Off-Balance Sheet Arrangements. We do not utilize off-balance sheet financing arrangements; however, we lease railcars, corporate office space and some equipment used in our operations under operating lease agreements that are either non-cancelable or subject to significant penalty upon cancellation, and have various limestone mineral leases. As of December 31, 2020, the total future lease payments under our various operating and limestone mineral leases totaled $2.3 million and $1.8 million, respectively, and are due in payments as summarized in the table above.



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