Boart Longyear samples for the proposed Golden Gate Bridge in San Francisco. In spite of the financial crisis, the 1930s saw improvements in diamond drilling technology, including the use of industrial-quality diamonds mined in Africa that were called “boarts.” In 1936, South Africa’s Anglo American Corporation formed Boart Products South Africa (Pty) Limited, which was later named Boart International. The new company developed the first mechanically-set diamond core bits, which were less expensive than the hand-set core bits that used more expensive Brazilian diamonds (carbonados). Longyear’s business gradually improved in the 1940s in response to expanding worldwide mineral exploration. In 1949, the
Vitaly Bort his wife Olga (born 1973) is a housewife. They have one daughter, Yana, born in 1996. Vitaly Bort Vitaly Bort is a former People's Deputy of Ukraine and a member of the Party of Regions (since May 2006). Vitaliy Petrovych Bort was born on 1 September 1972 in Donetsk. In 1994 Bort graduated from Donetsk Polytechnic University (Horlovka branch) in the faculty of the Construction of Roads and Bridges. In the 2014 parliamentary election Bort sought re-election to parliament for a constituency seat in Makiyivka; this time as a non-partisan candidate. At that time the constituency was held by pro-Russian