(overburden) stripping
11strip 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… …
12Oil shale in Estonia — Outcrop of Ordovician kukersite oil shale, northern Estonia Oil shale in Estonia is an important resource for the national economy. Estonia s oil shale deposits account for just 17% of total deposits in the European Union but the country… …
13Nickel mining in New Caledonia — A creek in southern New Caledonia. Red colours reveal the richness of the ground in nickel and iron oxides Location …
14strip mine — noun Date: 1926 a mine that is worked from the earth s surface by the stripping of overburden; especially a coal mine situated along the outcrop of a flat dipping bed • strip mine verb • strip miner noun …
15Roman Britain — History of the British Isles This box: view · talk · edit …
16Sedimentary rock — Middle Triassic marginal marine sequence of siltstones (below) and limestones (above), Virgin Formation, southwestern Utah, USA Sedimentary rock are types of rock that are formed by the deposition of material at the Earth s surface and within… …
17Subarctic climate — worldwide   Dsc …
18Natural History (Pliny) — Naturalis Historia, 1669 edition, title page. The title at the top reads: Volume I of the Natural History of Gaius Plinius Secundus. The Natural History (Latin: Naturalis Historia) is an encyclopedia published circa AD 77–79 by Pliny the… …
19Escondida — This article is about the mine. For the album by Jolie Holland, see Escondida (album). False color satellite image of the Escondida Mine, courtesy of NASA Minera Escondida, which means hidden in Spanish, is a mining company that operates two open …
20Keta — Infobox Settlement official name = Keta other name = native name = nickname = settlement type = motto = imagesize = 300px image caption = Fort Prinsensten on the beach of Keta in 1985 flag size = image seal size = image shield = shield size =… …
