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GREEN RIVER, Wyo. — After a four-minute elevator descent into the bowels of southwest Wyoming, dropping deep enough to bury the Empire State Building, a Tata Chemicals trona miner drove two Wyoming journalists in a truck 8.5 miles through catacombs, crossing under unaware motorists on Interstate 80 above, to where a crew was using an electric boring machine to chew into a wall of trona.
The visitors — briefed on safety protocols and equipped with underground attire and emergency devices — trudged through fresh mud bubbling with methane. Sections were added to a chartreuse inflatable tube that unrolled like a party favor and blew fresh air at the miners, who had just finished patching a small water line break.
Beams of light from hard hats swiveled and sparred in the tunnel as the earth moaned and machinery hummed. Soon, the machinery funneled a stream of sandwich-sized chunks of trona onto a fast-moving conveyor that would eventually deliver it to the surface to be processed into a fine, white powder and shipped around the world.
Have you ever brushed your teeth with toothpaste? Drank beer from a bottle or stared at the road through a car windshield? The white stuff — sodium carbonate (Na₂CO₃) to be precise — calms your heartburn and washes your socks. Check under your sink. Take a look in your bathroom cabinet. Many of those taken-for-granted products you use daily require an ingredient sourced from the depths of southwest Wyoming, and the sweat of underground miners.
Tata’s mine, along with its soda ash processing facilities at the surface, is among four such operations in Wyoming — all clustered in an area near the towns of Green River and Granger. Combined, they produce about 10 million tons of soda ash annually and feed 90% of the nation’s soda ash consumption. Wyoming producers make up more than 14% of the global market, according to the U.S. Geological Survey. Soda ash, in fact, accounts for more than half of Wyoming’s global commodity exports with a whopping $1.3 billion worth of shipments annually, according to industry officials and state economists.
Wyoming coal can’t say that. Not even close.
Despite the industry’s global importance and massive operations, employing some 2,500 workers in the state, it plods along without much fanfare. Unless you live in the region, you might not even know about trona or its role in everyday life.
“If you’re in Cheyenne and you say ‘trona’ or ‘soda ash,’ a lot of people will say, ‘What’s that?’” said longtime Green River resident Stan Blake who served as House District 39 representative from 2007 to 2020. The business, perhaps, is guilty of being kind of boring, or simply void of political drama, Blake suggested. “It’s just been steady for years and years, so it doesn’t get talked about much.”
It was a mystery, even to many who began their careers in coal mining and wound up at this trona mine. “I wasn’t even aware of trona until I came to Wyoming,” said Mine Electrical Planner Kale Pitt. When asked about the significance of the industry, another Tata miner said, “Other than they make glass and soap out of it, that’s about all I know. It’s a good way to make a living, I guess.”
The miner turned his headlamp and went back to the business at hand.
He was spot on, in Blake’s estimation, who was never a trona miner himself. He spent more than 30 years on the rails and in train yards rather than chipping at trona in Wyoming’s subterranean, but he knows his Green River neighbors and notices toys in driveways.
“The level of lifestyle out here is higher, probably, than a lot of other places in the state,” Blake said. “It seems like everybody’s got a boat and they go out to Flaming Gorge and fish. And everybody — all the miners — like to hunt. The [trona] mines are really, really relevant here in Sweetwater County, that’s for sure.”
Perhaps less glorious than coal, less loud than oil, there are changes afoot in the trona industry with implications, both good and potentially not so good, for Wyoming.
Baking soda and Range Rover windshields aside, Wyoming trona mine owners have been scrambling to meet new opportunities while bracing for headwinds.
On the opportune side, there’s wildly escalating demand for batteries and solar energy panels across the globe, according to industry reports. Though the business of toothpaste and baking soda doesn’t change much, global manufacturers are keen on ramping up production of energy components vital to meeting low-carbon initiatives. They can’t do it without more trona processed into soda ash. And Wyoming has a lot of trona — the largest known deposit in the world, according to industry and federal officials. Ninety percent of the world’s mineable, or “natural,” trona ore is right here in southwest Wyoming, they say.
“The world has an insatiable appetite for soda ash,” said Wyoming Tata’s Director of Governmental Affairs Jon Conrad, also a former Wyoming legislator. By Conrad’s estimation, the industry in Wyoming aims to expand — perhaps even double production in the next eight or so years.
In addition to Tata’s plans to crank out more soda ash while trimming its cost of production, neighboring producer WE Soda — with a larger operation than Tata’s — has launched a multi-billion-dollar expansion that’s crossing permitting milestones. A big part of that effort, “Project West,” will include “solution” mining, or pumping water into the trona deposits to flush the material to the surface rather than sending legions of boat-owning miners underground, according to the company.
Federal regulators also recently advanced permitting for a potential fifth trona operation in the region — Pacific Soda’s proposed Dry Creek Trona Mine project, which would also pull trona via water injection-and-return wells. The operation would create an estimated additional 300 full-time jobs in the region, according to the company.
All of that optimism and investment, however, might stand a little broadside to some shifting market and political winds.
Wyoming’s trona industry has, for decades, won an advantage for producing “natural” soda ash. It’s pretty simple: mine the rocks, crush them, dissolve and dehydrate the mineral and ship it to customers. But for the past couple of decades, China and Turkey have ramped up production of synthetic soda ash — a product derived from flushing sodium carbonate-containing material from more prevalent, less pure deposits.
Synthetic soda ash threatens to beat out natural soda ash on price, according to industry officials. Though Wyoming producers claim their product is superior for both its quality and lower-carbon footprint, natural soda ash producers must find efficiencies to lower their cost of production.
Solution mining is one major cost-efficiency strategy, according to Conrad. Another is finding alternatives to expensive electrical power and other forms of energy.
Mining trona and processing it into soda ash requires a lot of electricity — about a continuous 32 megawatts at Tata Chemicals, according to the company. One megawatt is enough electricity to power about 750 homes. Tata produces about 90% of its own electricity, via coal and natural gas burners, which also generate steam used in the refining process. But the operation relies on utility provider Rocky Mountain Power for the rest of its electricity needs, and those costs keep climbing. Tata wants to reduce or eliminate its reliance on Rocky Mountain Power by incorporating nuclear energy.
Last year, the company inked a letter of intent with BWXT Advanced Technologies to install up to eight nuclear microreactors on site, boosting Tata’s self-produced electrical power to about 40 megawatts — enough to meet expansion plans without increasing its reliance on Rocky Mountain Power. “The microreactors offer a carbon-free, reliable source of energy that can support [Tata Chemicals’] operations and contribute to the state’s energy portfolio,” the company said in a prepared statement.
But even the industry’s best-laid plans to increase its competitive edge could be derailed by politics. President Donald Trump’s tariff wars take particular aim at China, which accounts for about 10% of Wyoming soda ash sales. If the country retaliates with its own tariffs, it could be a major blow to the industry, according to University of Wyoming Associate Professor of Economics Rob Godby. It might even dampen the industry’s plans to expand operations.
“That could be a really significant impact on our [soda ash] exports,” Godby said.
Back underground, Mine Production Supervisor Eric Castillon proudly described a continual process of increasing production efficiencies in a never-ending effort to sustain the company’s competitive edge.
“This is the trona capital of the world,” Castillon said over the hum of a mobile conveyor carrying rock to the surface. “I can see this mine going for another 50 to 100 years. Trona’s not going anywhere, as long as there’s a need for it.”
This article was originally published by WyoFile and is republished here with permission. WyoFile is an independent nonprofit news organization focused on Wyoming people, places and policy.
