Conservation group opposing Thacker Move lithium mine seeks endangered standing for Kings River pyrg (snail)


The Western Watersheds Venture (WWP) has petitioned the US Fish and Wildlife Service to listing the uncommon Kings River pyrg (freshwater snail) below the Endangered Species Act. The pyrg is simply identified to stay in 13 small remoted springs round Thacker Move in Humboldt County, an space the place Canada-based Lithium Americas plans to develop a lithium mine.


Kings River pyrg (Pyrgulopsis imperialis) on substrate pebble (Photograph: Lynne Buckner)

Lithium Americas is targeted on advancing the Cauchari-Olaroz and Pastos Grandes tasks in Argentina and the Thacker Move undertaking in Nevada. Thacker Move is the biggest identified lithium useful resource in the USA. (Earlier publish.)



Thacker Move

Background. Thacker Move is located on the southern finish of the McDermitt Caldera, roughly 100 km northwest of Winnemucca, in Humboldt County, northern Nevada. In 2018, Lithium Americas accomplished a pre-feasibility research (PFS) on a two-phase undertaking with a manufacturing capability designed to succeed in 60,000 tpa of battery- high quality lithium carbonate (Li2CO3) and 46-year mine life. A feasibility research (FS) for Part 1 of 40,000 tpa Li2CO3 and Part 2 complete capability of 80,000 tpa Li2CO3 is predicted this 12 months.


The undertaking shall be developed as an open-pit mining operation utilizing standard steady mining gear. Given the smooth, clay nature of the deposit, minimal blasting and crushing is anticipated. The sedimentary-clay deposit at Thacker Move will use related mining strategies to many coal deposits.

The shallow (common depth of 300 ft), open-pit shall be mined in blocks and actively reclaimed. As soon as one block is mined to the underside, mining will transfer to the subsequent block whereas backfilling begins within the beforehand mined space. The backfilled pits would then be capped with topsoil and revegetated with native species.

In 2019, Lithium Americas entered right into a mine design, consulting and mine operations settlement with Sawtooth Mining, a subsidiary of North American Coal.
North American Coal has over 60 years of floor mining expertise and manages reclamation for over 200,000 acres below regulatory permits.

The ore shall be processed in a leaching circuit utilizing sulfuric acid to liberate the lithium from the claystone. Following the leaching course of, the lithium bearing resolution shall be purified utilizing crystallizers and reagents to supply battery-quality Li2CO3.


The Thacker Move operation will embrace a co-located sulfuric acid plant that may convert molten sulfur into sulfuric acid. This course of produces steam, which shall be use to generate energy for the processing services. Co-locating a sulfuric acid plant reduces the variety of vans on the street, as every ton of sulfur can create three tons of sulfuric acid, and sulfur is safer to move.

Thacker Move acquired a Document of Resolution in January 2021 from the US Division of the Inside Bureau of Land Administration (BLM). On 25 February 2022, state authorised the air high quality allow, water air pollution management allow and the reclamation allow for Thacker go. On 7 March, Nice Basin Useful resource Watch (GBRW) filed an attraction to the Nevada State Environmental Fee (NSEC), difficult the Nevada Division of Environmental Safety’s Water Air pollution Management Allow for the Thacker Move Lithium Mine.

GBRW submitted an unbiased report on the proposed tailings facility. On 14 June, the NSEC struck the report. On 28 June, a listening to on the attraction resulted within the fee voting to disclaim the attraction, and uphold the water air pollution management allow.

On 20 July, the corporate’s Lithium Technical Improvement Middle (LiTDC) was formally opened in a ceremony attended by the corporate’s management staff, Nevada Governor and College of Nevada, Reno President.

The endangered species petition represents the most recent effort by conservationists against the development of the mine. Conservationists say the Kings River pyrg is extremely susceptible to pure and human-caused threats, together with livestock grazing, varied impacts related to the just lately authorised Thacker Move lithium mine, spring modification, hydrological drought, local weather change, and the inadequacy of current regulatory mechanisms.

Conservationists declare the mine’s operation would deplete aquifers that feed the springs inhabited by the Kings River pyrg, inflicting springs to dry up and threatening the species’ survival.



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