Detroit salt mine worker (Detroit Salt Company) The mine remained in use until 1983, when International Salt closed the doors. Two years after the closure in 1985, Crystal Mines Inc. purchased the ...

Years the salt mine was abandoned, from 1983-1998. The economy of salt mining dried up like a 400 million-year-old ocean, prompting the company at the time, International Salt, to say, “Na.” ...

Detroit salt mine worker (Detroit Salt Company) The mine remained in use until 1983, when International Salt closed the doors. Two years after the closure in 1985, Crystal Mines Inc. purchased the ...

The parent company of Detroit’s “salt city” has been acquired for $2 billion. Stone Canyon Industries Holdings, a California industrial holding company, announced Wednesday it closed its ...

Today, the mine mostly supplies businesses with rock salt for use in products that melt ice. Geologists, though, say the Detroit mine could supply the world's needs for centuries.

Detroit Salt Mine won the award last year as well. The Cambridge-based Kissner Group, founded in 1878, started as a company that milled crops for local farmers and provided agricultural salt products.

Detroit’s salt mine has been in use since the early 1900s, according to Detroit Salt Company’s website. The mine, at 12841 Sanders St., is now a “salt city” about 1,200 feet below the city ...

For more than a century, miners have extracted tons of salt 1,200 feet below the surface in southwest Detroit. Now, they have a saint to look over them.

The parent company of Detroit Salt Co., which operates the enormous salt mine 1,200 feet below the city, has agreed to be acquired by a California industrial holding firm.Stone Canyon Industries ...

Detroit’s salt mine has been in use since the early 1900s, according to Detroit Salt Company’s website. The mine, at 12841 Sanders St., is now a “salt city” about 1,200 feet below the city ...