Drilling through aggregate concrete isn’t so hard when you know the right way to do it. We’re going to dive into the best tips and techniques to make your experience smooth and stress-free. After readin. [pdf]
A is first thought to have been used for rock drilling in 1844. Many quarries used hand held tools that required the driller to suspend himself from a rope over the quarry face in order to place the drill hole in the required position. This system used small diameter holes and was not only terribly inefficient, but very dangerous due to flying rock as a result of the inaccuracy of the drilled borehole. [pdf]
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