overburden
101strip 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 …
102weigh down — transitive verb Date: 14th century 1. to cause to bend down ; overburden 2. oppress, depress …
103Bauxite — is the most important aluminium ore. It consists largely of the minerals gibbsite Al(OH)3, boehmite γ AlO(OH), and diaspore α AlO(OH), together with the iron oxides goethite and hematite, the clay mineral kaolinite and small amounts of anatase… …
104Coal — Sedimentary Rock Anthracite coal Composition Primary carbon Secondary hydrogen, sulfur …
105Fallout shelter — A sign pointing to an old fallout shelter in New York City. Nuclear weapons …
106Roman Britain — History of the British Isles This box: view · talk · edit …
107Clay — For other uses, see Clay (disambiguation). The Gay Head cliffs in Martha s Vineyard consist almost entirely of clay. Clay is a general term including many combinations of one or more clay minerals with traces of metal oxides and organic… …
108Landslide — This article is about the geological phenomenon. For other uses, see Landslide (disambiguation). Rockslide redirects here. For the comic book character, see Rockslide (comics). Computer simulation of a slump landslide in San Mateo County,… …
109Soil — For other uses, see Soil (disambiguation). A represents soil; B represents laterite, a regolith; C represents saprolite, a less weathered regolith; the bottommost layer represents bedrock …
110Lignite — For other uses, see Lignite (disambiguation). Lignite …
