Wyoming Lime Producers (WLP), a division of Dakota Coal Company, owns the Frannie Lime Plant, a limestone processing plant near Frannie, WY. Pete Lien & Sons of Rapid City, SD operates the plant under a Lime Plant Marketing and Operating Agreement.
The Frannie Lime Plant converts limestone to high quality lime through a heat transfer process called calcination.
The cooled lime is then crushed to meet customer requirements and loaded onto railcars or trucks for delivery to Basin Electric's coal-based energy facilities for use in stack emission scrubbers and water treatment facilities. The lime also has other regional industrial and environmental uses.
Since its inception in 1993, Wyoming Lime Producers has purchased limestone from a nearby quarry managed by Montana Limestone Company.
In 2002, Dakota Coal Company purchased Montana Limestone Company to have better control over the quality of limestone mined and delivered to its customers.
Lime quality has a direct relationship with limestone quality. All coal-based power plants that use a dry scrubber system are demanding higher quality lime because of the more stringent Clean Air Act requirements.
Customers include power plants operated by Basin Electric, PPL Montana, Colorado Energy and Otter Tail Power Company.
In early 2008 Montana Limestone Company purchased 50 percent of the shares of Bighorn Limestone Company from a Minnesota based sugar beet cooperative. Bighorn Limestone Company owns and controls the limestone reserves and the surface above these reserves.
About 6.4 million kilowatt-hours of electricity is supplied to WLP annually by Big Horn Rural Electric Company.
Wyoming Lime Producers
Frannie Lime Plant
30 Highway 310, Box 66
Frannie, WY 82423
Dakota Coal Company
PO Box 5540
Bismarck, ND 58506-5540
Pete Lien & Sons
3401 Universal Dr.
Rapid City, SD 57702