- Drill - Wikipedia
There are many types of drills: some are powered manually, others use electricity (electric drill) or compressed air (pneumatic drill) as the motive power, and a minority are driven by an internal combustion engine (for example, earth drilling augers)
- Drill music - Wikipedia
Drill music, also known as drill rap or simply drill, is a subgenre of trap music that originated in Chicago in the early 2010s [3][4] Carrying similarities to gangsta rap and hip-hop music, drill lyricism is noted for its ominous, confrontational nature, often including references to gang rivalries and various incidents, sometimes murder
- Drilling - Wikipedia
Drilling is a cutting process where a drill bit is spun to cut a hole of circular cross-section in solid materials The drill bit is usually a rotary cutting tool, often multi-point The bit is pressed against the work-piece and rotated at rates from hundreds to thousands of revolutions per minute
- Drill - Simple English Wikipedia, the free encyclopedia
The cutter on a drill can have one or more teeth, and the teeth are arranged to cut efficiently when the cutter is rotated about its axis Almost all drills have a mechanism to rotate the cutter
- Drill (disambiguation) - Wikipedia
A drill is a tool or machine for cutting holes in a material Drill may also refer to:
- Drilling rig - Wikipedia
A drilling rig is an integrated system that drills wells, such as oil or water wells, or holes for piling and other construction purposes, into the earth's subsurface
- Well drilling - Wikipedia
Well drilling is the process of drilling a hole in the ground for the extraction of a natural resource such as ground water, brine, natural gas, or petroleum, for the injection of a fluid from surface to a subsurface reservoir or for subsurface formations evaluation or monitoring
|