sub level drift
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sub-level — /sub lev euhl/, n. Mining. a drift, dug through ore, into which overlying material, esp. from an upper layer of ore, is caved. * * * … Universalium
sub-level — /sub lev euhl/, n. Mining. a drift, dug through ore, into which overlying material, esp. from an upper layer of ore, is caved … Useful english dictionary
Drift mining — is either the mining of a placer deposit by underground methods, or the working of coal seams accessed by adits driven into the surface outcrop of the coal bed. Drift is a more general mining term, meaning a near horizontal passageway in a mine,… … Wikipedia
Drift (Transformers) — Drift is the name of three different fictional characters in the Transformers series. For trademark reasons, toys related to the character are marketed under the name Autobot Drift. Contents 1 Transformers: Armada 2 Transformers: Generations 2.1… … Wikipedia
Regional Reference Frame Sub-Commission for Europe — Infobox Union name= EUREF country= affiliation= International Association of Geodesy members= more than 30 countries full name= Regional Reference Frame Sub Commission for Europe native name= founded= 1987 current= head= dissolved date= dissolved … Wikipedia
Current sea level rise — This article is about the current and future rise in sea level associated with global warming. For sea level changes in Earth s history, see Sea level#Changes through geologic time. Sea level measurements from 23 long tide gauge records in… … Wikipedia
Mining — This article is about the extraction of geological materials from the Earth. For the municipality in Austria, see Mining, Austria. For the siege tactic, see Mining (military). For name of the Chinese emperor, see Daoguang Emperor. Simplified… … Wikipedia
Underground 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 … Wikipedia
Mountaintop removal mining — Mountaintop removal site Mountaintop removal in Martin County, Kentucky M … Wikipedia
Quarry — For other uses, see Quarry (disambiguation). A quarry is a type of open pit mine from which rock or minerals are extracted. Quarries are generally used for extracting building materials, such as dimension stone, construction aggregate, riprap,… … Wikipedia
Open-pit mining — El Chino, located near Silver City, New Mexico, is an open pit copper mine … Wikipedia
