Ask the Expert: Detroit Salt Company – with Video

Detroit is a city with a rich history, and among its many secrets lies a fascinating underground world that few people know about. Deep beneath the streets of downtown Detroit lies a vast network of salt mines, stretching over 1,500 acres and reaching depths of up to 1,200 feet. 

These mines have been in operation since the early 20th century and have played an important role in the city’s economy for decades.

The salt deposits in the Detroit area were formed millions of years ago when an ancient sea covered the region. Over time, the water evaporated, leaving behind vast deposits of salt. In the early 1900s, companies began mining the salt, which was used in a variety of industries, including food processing, chemical production, and de-icing roads.

The mines are accessed through a series of shafts and tunnels, and once underground, it’s easy to forget you’re in a bustling city. The temperature is a constant 55 degrees, and the air is dry and cool. The mines themselves are vast, with miles of tunnels and caverns stretching in every direction. Some areas are illuminated with electric lights, while others remain in darkness.

In addition to its industrial uses, the mines have also played a role in the city’s history. During World War II, the government used the mines to store important documents and artwork, protecting them from the threat of bombing. The mines have also been used as a filming location, with scenes from movies like “Transformers” and “8 Mile” being shot underground.

While the mines are not open to the public, they continue to play an important role in the city’s economy, providing jobs and supporting industries. The salt mined from these caverns is still used in a variety of products, and the mines continue to be an important part of Detroit’s history and identity. For those who are lucky enough to venture underground, the salt mines offer a unique and unforgettable experience, providing a glimpse into the hidden world beneath one of America’s most storied cities.

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