DGAP-News: EnviroLeach Technologies, Inc. / Key word(s): Miscellaneous 
Chemistry Advancements Significantly Improve Gold Recovery and Economics 
2021-06-08 / 14:30 
The issuer is solely responsible for the content of this announcement. 
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Chemistry Advancements Significantly Improve Gold Recovery and Economics 
VANCOUVER, BC / ACCESSWIRE / June 8, 2021 / EnviroLeach Technologies Inc. (the "Company "or "EnviroLeach"), (CSE:ETI) 
(OTCQB:EVLLF) (FSE:7N2) is pleased to report continued research and development of EnviroLeach's patented gold recovery 
technologies has resulted in improved efficiencies and significantly reduced reagent costs. 
Ongoing research to optimize EnviroLeach's proprietary lixiviant and patented gold recovery process has produced 
several breakthroughs resulting in higher gold recoveries, reduced leach times, and lower operating costs. 
The leach kinetics of EnviroLeach's lixiviant, already equal to or superior to those of cyanide in most circumstances, 
have been enhanced through the optimization of the secondary reagent. This advancement dramatically shortens the 
optimal leach time. The following example illustrates a 33% reduction in leach time from 24 hours to less than 16 hours 
(see Chart 1). 
Chart 1: Gold Recoveries & Leach Time Using Optimized Reagents 
https://www.accesswire.com/users/newswire/images/650844/ENVIRO-CHARTONE-060821.jpg 
In addition, the introduction of an alternate secondary reagent has resulted in a significant reduction in the amount 
of primary reagent required and a corresponding cost savings. The following chart (see Chart 2) shows enhanced gold 
recoveries using the alternate secondary reagent combined with primary reagent amounts reduced to 1/3 of original 
levels. 
 
Chart 2: Gold Recoveries and Leach Time Using Alternate Secondary Reagent 
https://www.accesswire.com/users/newswire/images/650844/ENVIRO-CHARTTWO060821.jpg 
Using the optimized alternate secondary reagent combined with lower amounts of primary reagent also reduces the 
residual gold in tails when compared to the original secondary reagent and original amount of primary reagent (see 
Chart 3). These technical advancements enhance EnviroLeach's patented technology resulting in a novel gold recovery 
solution with high recoveries, fast leach kinetics and very attractive economics when compared to conventional gold 
recovery processes. 
Chart 3: Reduced Reagent Requirements and Reduced Residual Gold in Tails 
https://www.accesswire.com/users/newswire/images/650844/ENVIRO-CHARTTHREE060821.jpg 
Ish Grewal, M.A.Sc., P.Eng. and Executive Vice President of EnviroLeach, states: "Our technology innovation team 
continues to deliver industry leading solutions for gold recovery. These improvements make our solution more 
economically compelling and certainly more sustainable. We are very proud of our accomplishments to date, and we 
believe these recent improvements will accelerate the adoption of EnviroLeach's technologies in the primary and 
secondary gold recovery sectors. Our technologies deliver a balanced combination of economics and environmental 
sustainability which the gold sector is striving to achieve.". 
Research to optimize EnviroLeach's proprietary lixiviant and patented gold recovery process was conducted at the 
Company's laboratory located in Burnaby, British Columbia. 
About EnviroLeach Technologies Inc. 
EnviroLeach extracts precious and other valuable metals from recycled printed circuit boards, ores, and mineral 
concentrates in a safe, environmentally friendly, and sustainable manner. The Company's primary target industries are 
the electronic waste (E-waste) management sector and the mining sector. Our patented chemistries and technology 
applications offer a cost-effective solution that replaces cyanide and reduces the reliance on smelters to recover 
precious metals. 
EnviroLeach's patented leach process is similar to conventional leaching methods for the recovery of gold, but it 
eliminates the use of toxic chemical compounds such as cyanide or acid-based solutions. EnviroLeach's treatment process 
targets industry participants seeking a domestic processing solution with lower logistics and third-party costs, and a 
reduced environmental impact. 
The EnviroLeach technology solution creates very strong differentiation in the marketplace and provides unique 
positioning. The awarded and pending patents combined with the processing knowledge required for optimization create 
significant barriers for competitors to overcome. The EnviroLeach process is cost-competitive, safe, sustainable, and 
holds potential for multiple revenue streams. Further information is available on the EnviroLeach website: https:// 
EnviroLeach.com 
Forward-Looking Statements 
This News Release contains "forward-looking information" and "forward-looking statements" within the meaning of 
applicable Canadian and the United States securities legislation. Statements contained herein that are not based on 
historical or current fact, including without limitation statements containing the words "anticipates," "believes," 
"may," "continues," "estimates," "expects," and "will" and words of similar import, constitute "forward-looking 
statements" within the meaning of the U.S. Private Securities Litigation Reform Act of 1995. Forward-looking 
information may include, but is not limited to, information with respect to our Research and Development activities, 
the accuracy of our capital and operating cost estimates; production and processing estimates; the results, the 
adequacy of EnviroLeach's financial resources and timing of development of ongoing research and development projects, 
costs and timing of future revenues or profits and adequacy of financial resources. Wherever possible, words such as 
"plans", "expects", "projects", "assumes", "budget", "strategy", "scheduled", "estimates", "forecasts", "anticipates", 
"believes", "intends", "targets" and similar expressions or statements that certain actions, events or results "may", 
"could", "would", "might" or "will" be taken, occur or be achieved, or the negative forms of any of these terms and 
similar expressions, have been used to identify forward-looking statements and information. Statements concerning 
future revenue or earnings estimates may also be deemed to constitute forward-looking information. Any statements that 
express or involve discussions with respect to predictions, expectations, beliefs, plans, projections, objectives, 
assumptions or future events or performance are not statements of historical fact and may be forward-looking 
information. Forward-looking information is subject to a variety of known and unknown risks, uncertainties and other 
factors that could cause actual events or results to differ from those expressed or implied by the forward-looking 
information. Forward-looking information is based on the expectations and opinions of EnviroLeach's management on the 
date the statements are made. The assumptions used in the preparation of such statements, although considered 
reasonable at the time of preparation, may prove to be imprecise. We do not assume any obligation to update 
forward-looking information, whether as a result of new information, future events or otherwise, other than as required 
by applicable law. For the reasons set forth above, prospective investors should not place undue reliance on 
forward-looking information. The CSE has not approved or disapproved of the information contained herein. 
Contact Information: 
Jason Leikam 
VP, Corporate Development 
EnviroLeach Technologies Inc. 
604.282.0601 
info@EnviroLeach.com 
SOURCE: EnviroLeach Technologies Inc. 
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2021-06-08 Dissemination of a Corporate News, transmitted by DGAP - a service of EQS Group AG. 
The issuer is solely responsible for the content of this announcement. 
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1205244 2021-06-08


 
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June 08, 2021 08:30 ET (12:30 GMT)