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
Rickinghall Inferior Rickinghall Inferior Rickinghall Inferior is a civil parish in the Mid Suffolk district of Suffolk, England. According to the 2011 census there were 233 males and 216 females in this civil parish, for a total population of 449. It includes the western part of the village of Rickinghall and is adjacent to the village and parish of Wattisfield. The road from the market town of Bury. St Edmunds to the city of Norwich passes through the village. The parishes name Rickinghall Inferior means " The nook of Rica's People ". The term " Inferior" means lower and refers to the