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
Waste management in Taiwan trucks include short English-language lessons. In 2016, 76.8% of fly ash from coal-fired power plants in Taiwan were reused in the construction areas, totaling to 1.703 million tons. Any remaining industrial waste from power generation industries, such as wire, cables and scrap were reused by waste disposal contractors through open bidding process. In 2016, there was 4,950 tons of such waste sold, which generated a revenue of NT$533 million. Some notable waste incinerators in Taiwan are: Waste management in Taiwan Waste management in Taiwan refers to the management and disposal of waste in Taiwan. It is regulated by the Department