In hard rock mining and quarrying, this is achieved through a controlled process of drilling and blasting. A blast hole drill rig is a specialised piece of equipment that creates a series of holes in a specific pattern, depth, and diameter across a section of rock known as a “bench.”
[pdf] Drilling precise holes in reinforced concrete, bricks, or standard concrete demands specialized equipment. Thus, a diamond core drill is the ideal tool for these challenging jobs. Here's a clear, step-by-step guide on achieving perfect holes every time using diamond core drill bits.
[pdf] Fill the oil reservoir with proper oil (Air Tool oil or 10W grade equivalent for 9 lb.and 15 lb.class and Rock Drill oil for the 38 lb.and 60 lb.class.) Check all nuts and bolts to ensure they are tight on the tool. Make sure retainer locks in place. Replace retainer and or springs if worn.
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