The process of drilling involves machinery that will power the drilling equipment. It can vary in power and size depending on the purpose for which it is being used. To make the hole, a drill bit is used which is made from very tough materials. Its face is quite sharp to do the job.
Drill bits can be made of metals in some cases. More advanced drilling requires better drills and in some cases, drill bits made of diamonds are often used.
Drilling can be done for as little as fractions of an inch to miles into the earth, once again, depending on the purpose of the job.
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The general purpose of boring is to make a hole or well in the surface of the earth. It is also used in order to make tunnels. Boring is used in various fields including geology, oil and gas industry, civil engineering and hydrology among others.
The deepest boring thus far on record was done by the former USSR which is 12000 meters. The purpose was to get samples of the core but the nature of the rocks in the lower layers of earth made it impossible to continue the journey.
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