A rock drill is a tool used to drill mine stone directly.
Rock drill drills holes in the rock formation, in order to put explosives to explode the rock, so as to complete the mining of stone or other stone works. In addition, the rock drill can also be changed to destroy the device used to break the hard layer of concrete and the like.
Rock drill according to its power source can be divided into four: wind-driven rock drill (aka air leg rock drill or pneumatic rock drill), internal combustion rock drill(aka gasoline rock drill), electric rock drill and hydraulic rock drill.
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