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Green River (TCNA) Mine

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Green River (TCNA) Mine

Location: 25 km NW from Green River, Wyoming, United States

Address:

324 Allied Chemical Road
Green River
Wyoming, United States
82935

Contacts:

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Categories

Summary

Mine TypeUnderground
StatusActive
Commodities
  • Trona
Mining Method
  • Room-and-pillar
  • Continuous
Production Start... Lock
Mine Life... Lock
SnapshotGreen River (TCNA) consists of an underground trona mine and a surface refining plant that processes the ore into soda ash.

The mine has an underground tunnel network spanning 20-plus square miles. Personnel and equipment enter the mine via a hoist that descends the 1,600 feet to the mine in two-and-a-half minutes. Open four-wheeled vehicles provide transportation throughout the mine and to the production faces.

On December 2024, Tata Chemicals Soda Ash has signed a letter of intent with BWXT Advanced Technologies LLC (BWXT) to explore the deployment of up to eight nuclear microreactors. TCSAP and BWXT agree to expand their collaboration to include the development of commercial terms and conditions to conditionally purchase BANR microreactors from BWXT and establish the schedule and key milestones along the path to deploying them by the early 2030s.

Owners

SourceSource
CompanyInterestOwnership
Tata Chemicals Ltd. 100 % Indirect
Tata Chemicals (Soda Ash) Partners (operator) 100 % Direct
Tata Chemicals (Soda Ash) Partners (collectively, “TCSAP” or the “Company”) operates a facility in Green River, Wyoming for the purpose of mining and processing trona ore and selling the resulting finished product, soda ash.

In a series of related legal entity restructuring changes occurring between April 3 and May 31, 2023, the Company’s owners, TC (Soda Ash) Partners Holdings (“TCSAP Holdings”) and TCSAP LLC were merged into TCSAP, with the latter surviving.

In a related legal entity restructuring, on May 31, 2023, TCSAP Holding’s 25% owner, Valley Holdings Inc, was merged with the Company’s 75% owner, Tata Chemicals North America Inc. (“TCNA”), with the latter surviving (collectively, the “Reorganization”). As a result of the Reorganization, TCSAP is now a wholly owned subsidiary of TCNA.

Contractors

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SourceSource

Deposit type

  • Evaporite

Summary:

Tata, Solvay and Tronox all extract trona from Bed 17, the largest mineable seam of more than two dozen within the Patch, called the Known Sodium Leasing Area (KSLA). The KSLA is divided into a checkerboard pattern of mile-square land tracts, primarily owned by the federal government (48%), and Anadarko Minerals (48%), and the remainder by the state and private interests.

Across the KSLA, six beds, or seams, are the main focus of mining. Tata, Solvay and Tronox are working in Bed 17 while Ciner is active in the shallower Beds 25 and 24. Bed 14 contains an estimated 5.4 billion tons of recoverable reserves, while Bed 17 contains 7 billion tons (as of 2016) and accounts for 75% of trona production. Depth-wise, these two beds are located within 100 vertical ft of each other: Bed 17 at a 1,500-ft mining depth and Bed 14 at 1,600 ft.

The seams tend to be at shallower depth at the north end of the patch-starting around 800 ft down-dipping toward the south to 2,000 ft.

The trona (hydrated sodium bicarbonate carbonate) beds of Sweetwater County, Wyoming are noted for a variety of rare evaporite minerals. The Green River Formation, is the type locality for eight rare minerals: bradleyite, ewaldite, loughlinite, mckelveyite-(Y), norsethite, paralabuntsovite-Mg, shortite and wegscheiderite. It also has a natural occurrence of moissanite (SiC) and 23 other valid mineral species.

Reserves

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Mining Methods

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Heavy Mobile Equipment

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Comminution

Crushers and Mills

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Processing

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Commodity Production

CommodityUnits2025202420232022202120202019
Trona kt  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe2,222
All production numbers are expressed as soda ash.

Operational metrics

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Annual ore mining rate  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe

Production Costs

Commodity production costs have not been reported.

Mine Financials

Units202520242023202220212020
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Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jan 28, 2026
....................... Subscription required ....................... Subscription required Subscription required Jan 28, 2026
....................... Subscription required ....................... Subscription required Subscription required Jan 28, 2026
....................... Subscription required ....................... Subscription required Subscription required Jan 28, 2026

Workforce

EmployeesYear
...... Subscription required 2025
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...... Subscription required 2023
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Aerial view:

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