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
Teisserenc de Bort (crater) gigantic Huygens to the southeast, Dawes to the southwest and Janssen to the northwest. Further north of the crater is a valley known as Locras Valles. A picture below shows dark slope streaks. The darker the streak, the younger it is. Teisserenc de Bort (crater) Teisserenc de Bort is an impact crater on Mars, located in the Arabia quadrangle at 0.4° N and 315.0° W. It measures 119 kilometers in diameter and was named after French meteorologist Léon Teisserenc de Bort (1855–1913). The name was adopted by IAU's Working Group for Planetary System Nomenclature in 1973. The crater are one