overburden
41List of unusual units of measurement — For units of measure primarily used in countries where English is not the main language, see the article specific to that country, a list of which can be found in the systems of measurement article. An unusual unit of measurement is a unit of… …
42Blast shelter — A blast shelter is a place where people can go to protect themselves from bomb blasts. It differs from a fallout shelter, in that its main purpose is to protect from shock waves and overpressure, instead of from radioactive precipitation, as a… …
43Exfoliation joint — Exfoliation joints wrapping around Half Dome in Yosemite National Park, California …
44strip mining — mining in an open pit after removal of the overburden. * * * Technique for the surface mining of coal by removing the soil and rock overburden above a seam and extracting the exposed mineral. The method is used to best advantage where the coal… …
45Open-pit mining — El Chino, located near Silver City, New Mexico, is an open pit copper mine …
46Oil sands — The Athabasca oil sands in Alberta, Canada, are a very large source of bitumen, which can be upgraded to synthetic crude oil. Bituminous sands, colloquially known as oil sands or tar sands, are a type of unconventional petroleum deposit. The… …
47Dragline excavator — Page 725 dragline at Turkish Coal Association Yenikoy Open Pit Coal Mine, Milas …
48Dartmoor tin-mining — The wheelpit at Huntingdon mine The Dartmoor tin mining industry is thought to have originated in pre Roman times,[1] and continued right through to the 20th century. From the 12th century onwards tin mining was regulated by a Stannary Parliament …
49Grasberg mine — The Grasberg mine is the largest gold mine and the third largest copper mine in the world. It is located in the province of Papua in Indonesia near coord|4|03|10|S|137|06|57|E, and employs 19 500. It is majority owned through a subsidiary by… …
50Bagger 288 — The Bagger 288 (Excavator 288), built by the German company Krupp for the energy and mining firm Rheinbraun, is a bucket wheel excavator. More specifically, it is a mobile strip mining machine. When its construction was completed in 1978, Bagger… …
