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Montana Limestone Company

Montana Limestone Company quarry

The Montana Limestone Company (MLC), a subsidiary of Dakota Coal Company (Dakota Coal), operates a lime stone quarry 70 miles south of Billings, MT. The limestone reserves are owned by the Bighorn Limestone Company.

Dakota Coal has certain rights to the limestone reserves mined by MLC and has invested in operational changes that have improved limestone quality. Dakota Coal Company is a subsidiary of Basin Electric Power Cooperative, Bismarck, ND (video).

The quarry is recognized as one of the area's leading names in the production of chemical grade limestone rock. It is an efficient operation that dates back many decades. The quarry was originally developed to provide limestone for use in the sugar beet industry.

The customer list has grown to include Wyoming Lime Producers, a division of Dakota Coal Company that operates a lime kiln operation near Frannie, WY. The lime produced there is a vital ingredient in removing sulfur dioxide from stack emissions at Basin Electric’s coal-based power plants and water treatment facilities in Wyoming and North Dakota.

Annual sales from MLC's quarry and fine grind plant average about 650,000 tons.

The fine grind plant produces various sizes of ground limestone. These high-calcium, ground products are available in bags or bulk for industrial, agricultural and mining applications. Chemical grade limestone is provided at a level of +95% calcium carbonate.

The MLC quarry offers several different sizes of limestone for private and commercial landscaping needs.

Download a Montana Limestone Company product price list (PDF format)

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