A down-the-hole drill, usually called DTH Drilling Rig, is basically a mini jackhammer screwed on the bottom of a drill string. The speedy hammer activity breaks hard stone into little flakes and dust and can be dismissed evident by the air exhaust in the DTH hammer.
[pdf] Core drilling is a method of drilling that involves using a special drill bit and drill to remove a cylindrical core of material. This technique is often used in construction and other industries to create holes.
[pdf] Diamond Tool Store offers core drills for construction companies of all sizes. Our diamond core drill rigs include name brands such as Husqvarna, Diamond Products, Golz, Norton, MK Diamond, Metabo, a.
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