Quinsam Coal Mine located in Vancouver Island, BC, Canada is mining the No 1 coal seam at the 2 North/3 North mine and the No 3 coal seam at 4 South Mine This paper describes its geology and structure, mining and processing, development and depillaring practrces as well as methods of roof supports under various geological conditions.
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机译：位于加拿大不列颠哥伦比亚省温哥华岛的Quinsam煤矿正在开采2 North / 3 North煤矿的1号煤层和South 4煤矿的3号煤层。各种地质条件下的脱毛实践以及屋顶支架的方法。
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