Cut through the most challenging materials with a powerful, efficient air-powered rock drill from Herc Rentals. The knowledgeable rental specialists at any of our convenient locations can help you choose the rig. [pdf]
DTH technique was used in well drilling exclusively to dig, accurate, vertical bores, and rotary drilling was used to turn the hole. The Directional DTH system, patented by Atlas Copco, was first used. [pdf]
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