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How We Produce

We mine rock salt using a drill-and-blast mining technique in deep salt deposits. We start by cutting into the rock salt face using specialized equipment. We then drill holes into the face and use explosives to break the salt into small pieces. Diesel-powered front-end loaders and trucks load and haul the salt to a crusher where it is reduced in size, loaded onto a conveyor belt and transported to a mill. At the mill the salt is crushed further and screened to the required sizes before being hoisted to the surface.

Our rock salt mines are located underground, as deep as 1,800 feet below the surface. We extract salt from each mine in rectangular "room" sections, leaving behind vast “pillars” of salt to support the mine structure.

Solar Evaporation:
Solar evaporation is the oldest and most energy-efficient method of mineral production.

At the Great Salt Lake in Utah, we draw highly saline waters from the lake's most remote areas into very shallow solar evaporation ponds. The sun naturally evaporates the water in these ponds over a three-year span, leaving beds of naturally occurring crystallized minerals.

We gather these minerals, cleanse and process them to produce our all-natural products.

As North America's leader in highway deicing, count on us to help you provide safer highways, streets and bridges during harsh winter weather in all major snow-belt regions. Our extensive distribution network, coupled with our world-class customer service team, will help you provide safer driving surfaces in winter weather. We can get salt to you by rail, truck, barge or vessel, so when you need salt, Compass Minerals delivers.