Utah’s Salt Mining Industry: A rich legacy and bright future

 Morton Salt stockpiles its product in stacks near the Great Salt Lake. Utah's salt mining industry has existed since Mormon pioneers
discovered a wealth of the mineral when they arrived in Utah in the middle of the 19th century. Adobe stock photo.

 John Rogers 

When you hear the words "mine" or "mining," you think dark underground tunnels or deep pits. But there’s a mining industry in Utah that’s a key driver of the state’s economy but doesn’t necessarily fit into the common definitions of mining activity.

Utah’s salt mining industry has a rich history that stretches back over 150 years. But with several notable exceptions, it mostly takes place on the surface of Utah’s landscape.

In addition to its place on our dinner table, salt is a critical component in numerous industries — from food preservation to road de-icing — and Utah has been a leading player in its production for more than a century. The state’s vast salt deposits, particularly from the Great Salt Lake, have made it one of the top producers of salt in the United States.

History of Salt Mining in Utah

Salt mining in Utah dates back to the mid-1800s. The state’s iconic Great Salt Lake, the largest saltwater lake in the Western Hemisphere, has been central to the development of the salt industry. Early settlers discovered large deposits of salt around the lake and began harvesting it for use in food preservation, a critical need in the arid landscape where refrigeration was not an option.

In 1850, the Mormon settlers founded the first commercial salt works in the region, producing salt primarily for local consumption. By the late 19th century, the state’s salt industry had grown substantially, attracting national and international interest. As the transportation network expanded, particularly with the completion of the Transcontinental Railroad in 1869, the shipping of salt from Utah became more viable, opening up new markets.

The discovery of other large salt deposits, such as those found in the underground mines of the Paradox Basin in southeastern Utah and the pink salt mined by the Real Salt Co. near Redmond in Sevier County, further bolstered the industry. Industry leaders estimate these underground deposits have been in place for tens of millions of years.

Major Players

Today, several companies dominate Utah’s salt production landscape, with operations that include both surface mining and salt extraction from underground deposits. These companies operate some of the largest salt production facilities in the United States.

Intrepid Potash Inc. One of the most prominent players in Utah’s salt mining industry is Intrepid Potash, a company that operates both potash and salt mines. Intrepid’s salt production comes from its operation in the Paradox Basin. The company is one of the largest producers of potash and salt in the U.S., and it primarily uses solution mining methods to extract salt from brine deposits.

In 2023, Intrepid reported producing approximately 3.7 million tons of salt across its operations in Utah. The company’s facilities are critical not only for salt production but also for creating byproducts like magnesium chloride, which is used for road de-icing during the winter months.

Morton Salt. Another major player is Morton Salt, a subsidiary of the international chemical giant K+S. Morton Salt is one of the largest salt producers in North America and it operates a number of salt mines, including one in the Salt Lake Valley. The company’s operation in the region is primarily focused on producing solar salt — salt that is extracted through evaporation from the Great Salt Lake.

Morton Salt produces an estimated 1.6 million tons of salt annually in Utah, with the majority going toward de-icing, industrial use and consumer table salt. Morton’s solar evaporation ponds, which cover thousands of acres of land, are a key component of its operations in Utah.

United Salt Corp. United Salt operates the largest underground salt mine in the western United States, the Salt Lake Mine, located near the Great Salt Lake. United Salt’s mining techniques focus on traditional underground room-and-pillar mining, which allows the company to extract salt with minimal environmental disruption.

United Salt produces millions of tons of salt each year, focusing primarily on industrial uses, including salt for water softeners, chemical production and agricultural applications. The compnay’s salt is distributed throughout the U.S. and internationally.

Economic Significance

of Salt Mining

Salt mining is a significant contributor to Utah’s economy. The state ranks as one of the top salt producers in the U.S., with an annual production of around 12 million tons of salt, valued at more than $1 billion. Salt mining directly supports thousands of jobs in the state, from the miners and equipment operators to the employees involved in transportation, marketing and distribution.

Beyond direct employment, the salt industry generates additional economic activity in related sectors, such as logistics and chemicals. For instance, the de-icing industry alone accounts for a substantial portion of Utah’s salt output. The U.S. Department of Transportation estimates that millions of tons of salt are used each year to keep roads clear of ice during winter months, with much of it sourced from Utah’s mines.

Additionally, the high-quality salt extracted in Utah is used in the manufacturing of chemicals such as chlorine, sodium hydroxide and caustic soda, which are essential for industries like water treatment, pharmaceuticals and plastics. The salt industry’s products also play a key role in agriculture and food production.

Environmental Impact

While salt mining is a vital industry for Utah, it does have some environmental implications. The extraction methods, whether from underground mines or surface evaporation ponds, can affect local ecosystems. For instance, solar evaporation ponds, while relatively low impact compared to other mining techniques, consume large amounts of water, a precious resource in the arid Utah climate. The use of brine in solution mining also has the potential to impact surrounding groundwater and surface water quality if not managed properly.

Additionally, road de-icing, a major consumer of salt, can result in runoff that affects local water bodies. High concentrations of salt in freshwater systems can harm aquatic life by increasing salinity levels, potentially disrupting ecosystems. Some salt mining companies have worked to mitigate these issues by implementing more sustainable practices, such as recycling water in the evaporation process or using alternative de-icing chemicals.

Looking Ahead

The outlook for Utah’s salt mining industry remains positive, according to those who extract the chemical and a living from its abundance. The continued demand for salt for food applications, de-icing, water softening and industrial purposes ensures that Utah’s salt operations will remain essential for both the state and the nation.

There is also a growing interest in the use of salt for new technologies, such as energy storage and carbon capture, which could open new markets for Utah’s abundant salt reserves. Researchers are exploring the use of salt as a key material for large-scale battery storage systems, which could contribute to the growing renewable energy sector. If these innovations take off, they could provide additional growth opportunities for Utah’s salt industry.

Due to technological advancements, there are also new ways to mitigate environmental impact, industry sources say. Companies are increasingly adopting sustainability initiatives, including reducing water usage in mining operations and exploring more eco-friendly methods of salt extraction and processing. With stricter environmental regulations and greater public awareness, the industry is likely to continue evolving toward more responsible practices.

With major players like Intrepid Potash, Morton Salt and United Salt, Utah is a leading producer of salt in the United States. Looking ahead, the industry’s potential growth, fueled by technological innovations and sustainable practices, promises to continue to play its important role in Utah’s economy for many years to come.