Also known as: DR., DR+, DR…
DR has various meanings in the Organizations category. Discover the full forms, definitions, and usage contexts of DR in Organizations.
Hole making with a rotary end-cutting tool having one or more cutting lips and one or more helical or straight flutes or tubes for the ejection of chips and the passage of a cutting fluid. The act of boring a hole (1) to determine whether minerals are present in commercially recoverable quantities and (2) to accomplish production of the minerals (including drilling to inject fluids).
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