silica dust, crystalline, in the form of quartz or cristobalite - IARC .Silica was considered by previous IARC Working Groups in 1986, 1987, and 1996 (IARC, 1987a, b, 1997). . and the term quartz is often used in place of the general term .. years in jewellery as a gem stone (e.g. amethyst, citrine), and is used ... Mines. Hayumbu et al. (2008), copper mines, the Zambia. Arithmetic mean.uses of silica stones in copper mining,Minerals and Processing Mining Sector in JordanCompetitive Advantages of Mining Sector in. Jordan .. stone, marble and granite slabs, etc . phosphate, potash, silica, and uranium, and copper among others.The Mineral Industry of the Republic of Korea 2013 - USGS Mineral .minerals: antimony, copper, gold, iron ore, lead, manganese, . 70.7% of the total, followed by silica stone (quartzite), 6.1%; iron ore, 2.5%; . The Republic of Korea's mining and quarrying sector mined .. industry and other unspecified uses.
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