Comstock Mining Receives Approval for Mercury Remediation Pilot Test Plant, Nevada
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Comstock Mining and Mercury Clean Up (MCU) said that Comstock recently received approval for an Engineering Design Change (EDC) from the Nevada Division of Environmental Protection (NDEP) approving the Mercury Remediation Pilot Test Plant located within Comstock’s existing leach pad.
“Our focus on realigning and transforming the company is accelerating. Our team has secured permits and we are mobilizing our drilling and sampling equipment to commence drilling and sampling. The platform is in place for developing a world-class, state of the art global mercury remediation system in 2020,” said Corrado De Gasperis, executive chairman and CEO.
During 2019, Comstock Processing LLC, Comstock’s wholly-owned subsidiary that owns all of the property, plant, equipment, and permits entered into a definitive agreement with Mercury Clean Up LLC (MCU), in collaboration with Oro Industries, for the manufacture and global deployment of mercury remediation systems with proprietary mechanical, hydro, electro-chemical, and oxidation processes to reclaim, treat and remediate mercury, and the entrapped precious metals, from soils, waste, and tailings.
Comstock recently received approval for the EDC from NDEP approving the Mercury Remediation Pilot Test Plant that will be located within Comstock’s existing heap leach pad. This NDEP and U.S. Environmental Protection Agency (EPA) based approvals for sampling, analysis, and management of historically-contaminated soils on Comstock properties enables MCU to commence sampling and testing materials, with the objective of identifying the best target areas for mercury remediation. Comstock provides the platform for testing and MCU conducts the sampling and trials that prove efficacy, scalability, and feasibility.
Sampling will begin with using a portable, gasoline-powered auger drill mounted on a hand-truck dolly that extracts samples from 4-6 inch diameter holes from the material in a grid fashion and the samples will be analyzed for mercury and precious metals. The sampling auger drill will be obtaining samples of possible mercury-contaminated soils, historic mine and mill materials, historic tailings, and mine waste samples using previously approved protocols for the Comstock’s Carson River Mercury Superfund Site (CRMSS). The CRMSS Material Management Plan was previously approved by NDEP’s Bureau of Corrective Action (BCA).
Larger scale excavation of materials will start within a few months and the materials will be stockpiled near the Pilot Test Plant. The Pilot Test Plant will start operating small batches, likely in January, 2020. All mercury recovered during testing will be collected and remain on the existing heap leach pad until shipped offsite to an appropriate mercury storage or management facility.
About Comstock Mining
Comstock Mining Inc. is a Nevada-based, gold and silver mining company with extensive, contiguous property in the Comstock District and is an emerging leader in sustainable, responsible mining that is currently commercializing environment-enhancing, precious-metal-based technologies, products and processes for precious metal recovery. The company began acquiring properties in the Comstock District in 2003. Since then, the company has consolidated a significant portion of the Comstock District, amassed the single largest known repository of historical and current geological data on the Comstock region, secured permits, built an infrastructure and completed its first phase of production. The company continues evaluating and acquiring properties inside and outside the district expanding its footprint and exploring all of our existing and prospective opportunities for further exploration, development and mining. The company’s goal is to grow per-share value by commercializing environment-enhancing, precious-metal-based products and processes that generate predictable cash flow (throughput) and increase the long-term enterprise value of its northern Nevada based platform.
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