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
Boart Longyear In 2005, Boart Longyear was acquired by the private equity firms Advent International, Bain Capital, and several management investors. The headquarters were then moved to Salt Lake City. Since the sale by Anglo American, management has undertaken a number of ownership changes, restructuring initiatives, and acquisitions, establishing Boart Longyear as a global leader in mining exploration services and products. By October 2006, Advent sold Boart Longyear to the Australian investment firm, Macquarie Bank, and, in April 2007, Macquarie took Boart Longyear public in an A$2.3 billion IPO on the ASX stock exchange. Boart Longyear’s IPO was the second largest IPO