Boart Longyear John Hoffmeister as president and chairman of the board of the company. FACTS was dissolved when Boart International (a wholly owned subsidiary of Anglo American) bought out CDP's interest in Longyear. In 1974, Boart International invested capital which helped Longyear to become the world's leading manufacturer of diamond bits. Boart Longyear engineers in North Bay, Ontario, secured a reliable source of high-performance synthetic diamonds, which triggered the development of a new bit design – the impregnated-diamond bit. With decades of powder metallurgy experience behind them, Longyear engineers set out to develop a new crown that consisted of synthetic diamonds evenly
Pierre Edmond Teisserenc de Bort which had been made by him during his 1876 ministry. In 1879 he was sent as ambassador to Vienna, whence he was next year recalled on the score of health. Two years later he re-entered the Senate, where he did good service to the cause of "Republican Defence" during the Boulangist agitation. His works consist of discussions of railway policy from the technical and economic side. Pierre Edmond Teisserenc de Bort Pierre Edmond Teisserenc de Bort (17 September 1814 at Châteauroux – 29 July 1892 in Paris), was a French writer and politician. He entered the civil service after the