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by TJM Drilltools Friday, 11 November 2011 14:58
DTH is short for "down-the-hole". The down-the-hole drilling is used to produce large-diameter holes in rocks, usually in the initial stage prior to blasting, but it is also used in non-blasting applications. DTH drilling are used mostly in mining quarries but can be used in a variety of other construction applications.
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