Start by doing a route to link between the summit in the designated areas. Drilling blasting cut the top of the mountain to the services for drilling a powerful blast from the bomb and safety drilling and drilling blast. Vertical Drill according to the height of the Bench set ready to dig scoop instantly. Produce dig scoop into the jetting, and into the Stock road is implemented in the area ที่จำกัด. Because there will be the bomb as a bar. In depth penetration can Co., Ltd. And stop is around after the bombs to plough and smooth face to smooth. Placing the drill and the next round.
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