drilling
81Exploration drilling — Drilling done in search of new mineral deposits, on extensions of known ore deposits, or at the location of a discovery up to the time when the company decides that sufficient ore reserves are present to justify commercial exploration.… …
82rotary drilling — Drilling a well by the rotation of a bit. A method frequently used in boring for oil. Boring is done by rotation of a bit attached to a steel pipe, which, when so used is called a drill stem. A smaller bore, called a rat hole, sometimes precedes …
83electric drilling machine — drilling machine that is operated by means of electricity …
84oil drilling — drilling in the earth in search of oil …
85trial drilling — drilling into the Earth in an attempt to find oil or water …
86Drilling for Vegemite — anal intercourse …
87drilling for vegemite — Australian Slang anal intercourse …
88drilling a hole — boring a hole, making a hole in a surface with a power drill …
89drilling machine — n. machine with a drill bit for boring holes …
90drilling wells — boring holes in the ground to make a well (from which oil, water, etc. is taken) …