Because of market demand and supply contradictions, artificial sand, aggregate gradually replace natural sand as the main buildings. Due to the surge in demand for artificial sand, sand enterprises, many enterprises have turned system but first would be a lack of professional knowledge, combined with some low quality equipment manufacturers only immediate interests, large number…

Mining is one of the oldest activities of man. It is the se- load the blasted rock and transport it to special, steeply lective extraction of ore from the Earth’s surface. Man’s  inclined ore paths. The ore is then loaded into special mining activities began at the start of the Stone Age  buckets and hoisted…