U.S. Energy Corp., an independent energy company, focuses on the acquisition and development of oil and gas producing properties in the continental United States. It holds interests in various oil and gas projects in Williston Basin of North Dakota; Dimmit County of Texas; and Coastal Louisiana. As of December 31, 2017, the company had estimated proved reserves of 824,115 barrels of oil equivalent. It has interests in oil and gas leases covering ... View company details

United States Lime & Minerals, Inc. manufactures and supplies lime and limestone products in the United States. It operates through two segments, Lime and Limestone Operations, and Natural Gas Interests. The Lime and Limestone Operations segment extracts limestone from open-pit quarries and an underground mine, and processes it as pulverized limestone, quicklime, hydrated lime, and lime slurry. This segment supplies its products primarily to the ... View company details

U.S. Silica Holdings, Inc. produces and sells commercial silica in the United States. The company operates through two segments, Oil & Gas Proppants and Industrial & Specialty Products. It offers whole grain commercial silica products to be used as fracturing sand in connection with oil and natural gas recovery, as well as sells its whole grain silica products in various size distributions, grain shapes, and chemical purity levels for manufacturi... View company details