MDU vs SLCA

MDU Resources Group Inc.

MDU Resources Group, Inc. engages in the regulated energy delivery, and construction materials and services businesses in the United States. The company's Electric segment generates, transmits, and distributes electricity for residential, commercial, industrial, and municipal customers in Montana, North Dakota, South Dakota, and Wyoming. Its Natural Gas Distribution segment distributes natural gas for residential, commercial, and industrial customers in Idaho, Minnesota, Montana, North Dakota, Oregon, South Dakota, Washington, and Wyoming; and offers supply related value-added services. The company's Pipeline segment provides natural gas transportation and underground storage services through a regulated pipeline system primarily in the Rocky Mountain and northern Great Plains regions; and cathodic protection and other energy-related services. Its Construction Materials and Contracting segment mines, processes, and sells construction aggregates; produces and sells asphalt mix; and supplies ready-mixed concrete. This segment is also involved in the sale of cement, liquid asphalt, finished concrete products, and other building materials and related contracting services. The company's Construction Services segment designs, constructs, and maintains electrical and communication wiring and infrastructure, fire suppression systems, and mechanical piping and services; and overhead and underground electrical distribution and transmission lines, substations, external lighting, traffic signalization, and gas pipelines, as well as engages in the utility excavation activities. This segment also manufactures and distributes transmission line construction equipment; and constructs and maintains renewable energy projects. It serves manufacturing, commercial, industrial, institutional, and government customers, as well as utilities. The company was founded in 1924 and is headquartered in Bismarck, North Dakota.

U.S. Silica Holdings Inc.

U.S. Silica Holdings, Inc. produces and sells commercial silica in the United States. It operates through two segments, Oil & Gas Proppants and Industrial & Specialty Products. The company 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 manufacturing glass products. It also provides various grades of whole grain round silica to the foundry industry; ground silica and industrial minerals products for various products; and engineered performance materials made from diatomaceous earth (DE), clay, and perlite. In addition, the company offers transportation, equipment rental, and contract labor services. It serves oilfield services companies, and exploration and production companies that are engaged in hydraulic fracturing; and industrial and specialty products end markets. The company was formerly known as GGC USS Holdings, Inc. U.S. Silica Holdings, Inc. was incorporated in 2008 and is headquartered in Katy, Texas.