Boart Longyear diamond drilling firm; Brainard-Kilman, a maker of civil engineering devices, such as well monitoring and test equipment; and ChemGrout a mfg of cement grouting equipment. Longyear acquired Slope Indicator Company, the nation's largest producer of geotechnical instruments, and Northern Air Supply in 1988, followed by the Campbell Pacific Division in 1989 and WTD Environmental Drilling in 1990. Then in 1994, North Star Drilling Company, specializing in sonic drilling was acquired. On January 2, 1995, Boart International and the Longyear Company officially merged into a single company and changed its name to Boart Longyear Limited. At this point the two companies
Uncontrolled waste and acidification of oceans as result of Co2 emissions from mining Uncontrolled waste Uncontrolled waste is a group of waste types that do not fall into either the controlled, special or hazardous waste categories, such as specific mining wastes and agricultural wastes. This should not be confused with an alternative definition of uncontrolled waste that refers to improper waste disposal. Uncontrolled waste has significant impacts on the environment. In certain areas of Germany, it was found that industrial waste such as from ore smelting and waste products produced from petrochemical plants were found near population centers. Main effects of waste