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
Industrial big data beyond the capability of traditional methods therefore handling, managing and processing it would be a challenge. In the course of last several years, researchers and companies have actively participated in collecting, organizing and analyzing huge industrial data sets. Some of these data sets are currently available for public usage for research purposes. NASA data repository is one of the most famous data repositories for Industrial Big Data. Various data sets provided by this repository may be used for predictive analysis, fault detection, prognostics and etc. Industrial big data Industrial big data refers to a large amount of diversified time series