The Athabasca oil sands are large deposits of bitumen or extremely heavy crude oil located in consist of a mixture of crude bitumen a semi solid rock like form of crude oil silica sand clay minerals and water Only 20 percent of bitumen can be extracted using open pit mining methods which involves large scale
NBF Ueno Building 4 24 11 Higashiueno Taito ku Tokyo Japan such as optical pickups and synthetic silica glass for semiconductor manufacturing Plant engineering maintenance Environmental and anti pollution plants equipment Manufacture and sales of silica rock silica sand feldspar and others and sales of