underground drill
1Underground mining (hard rock) — A three dimensional model of an underground mine with shaft access Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, mainly those containing metals[1] such as ore containing gold …
2Underground mining equipment — A coal cutting machine is used in conventional mining to undercut, top cut, or shear the coal face so that coal can be fractured easily when blasted. It cuts 9 to 13 feet into the bed. Continuous auger machine is used in mining coalbeds less… …
3tunnels and underground excavations — ▪ engineering Introduction Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …
4Down-the-hole drill — A Down The Hole Drill Called DTH in most drilling terms. The down the hole drill is basically a mini jack hammer that screws on the bottom of a drill string. The fast hammer action breaks hard rock into small flakes and dust and is blown clear by …
5My Bloody Underground — Studio album by The Brian Jonestown Massacre Released April 1 …
6Orex Exploration — Inc. Type Public (TSX V: OX) Industry Mining Founded 1987 …
7Technodrome — The Technodrome is a semi spherical tank like metallic mobile subterranean fortress of Krang and Shredder, the main villains on the 1987 Teenage Mutant Ninja Turtles cartoon series and the Archie Teenage Mutant Ninja Turtles Adventures comics. It …
82010 Copiapó mining accident — Copiapó mining accident redirects here. For the 2006 accident in the Carola Agustina mine, see 2006 Copiapó mining accident. 2010 Copiapó mining accident Rescue efforts at San José Mine near Copiapó, Chile on 10 August 2010 Date …
9petroleum production — Introduction recovery of crude oil and, often, associated natural gas from the Earth. petroleum is a naturally occurring hydrocarbon material that is believed to have formed in deep sedimentary (sedimentary rock) beds from animal and …
10mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… …
