How to use the Down The Hole (DTH) Hammer function ...
2018-2-6u2002·u2002How to use the Down The Hole (DTH) Hammer function? When percussion or hammer drilling the percussion mechanism is called a DTH or down the hole . hammer. This drilling tool is located directly above the down hole hammer bit. The driller transfers. weight to the bit through the drill pipe as well as provides some rotation. Through the use of a
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