AMCOL International Corporation engages in the development and application of minerals and technology products and services to various industrial and consumer markets. It operates in four segments: Minerals and Materials, Environmental, Oilfield Services, and Transportation. The Minerals and Materials segment mines, processes, and distributes minerals and products principally bentonite, a montmorillonite clay for use in various industrial and consumer markets, including metalcasting, pet care, laundry care, and drilling industries. It also develops and manufactures synthetic materials primarily for personal care applications. The Environmental segment manufactures and distributes products and related services for use as moisture and vapor barriers in commercial construction, landfills, and various other industrial and commercial applications; supplies roofing and waterproofing materials to the non-residential construction industry; and offers contracting services for construction projects, as well as drilling products used in environmental and geotechnical drilling applications, horizontal directional drilling, mineral exploration, and foundation construction applications. The OilField Services segment provides onshore and offshore water treatment filtration, well testing, pipeline separation, nitrogen, coil tubing, and other services to the oil and natural gas industry, as well as offers equipment rentals for its onshore and offshore applications. The Transportation segment engages in long-haul trucking and freight brokerage business. The company operates in the Americas, Europe, the Middle East, Africa, and the Asia Pacific. AMCOL International Corporation was founded in 1924 and is headquartered in Hoffman Estates, Illinois.