overburden
51Yallourn 900mm Railway — Trains being loaded with overburden in the open cut (1940s) The Yallourn 900mm Railway was a 900 mm narrow gauge railway operated by the State Electricity Commission of Victoria in the Latrobe Valley of Victoria, Australia. The railway was built… …
52metamorphic rock — Any of a class of rocks that result from the alteration of preexisting rocks in response to changing geological conditions, including variations in temperature, pressure, and mechanical stress. The preexisting rocks may be igneous, sedimentary,… …
53Coal companies of Australia — Contents 1 Anglo Coal Australia Ltd 1.1 Anglo Coal Callide Mine 1.2 Anglo Coal Capcoal Mine …
54Earthquake — For other uses, see Earthquake (disambiguation). Global earthquake epicenters, 1963–1998 …
55Excavation (archaeology) — The term archaeological excavation has a double meaning.# Excavation is the best known and most commonly used within the science of archaeology. In this sense it is the exposure, processing and recording of archaeological remains. # The term is… …
56Toyota Production System — The Toyota Production System (TPS) combines management philosophy and practices to form an integrated socio technical system at Toyota. The TPS organizes manufacturing and logistics for the automobile manufacturer, including interaction with… …
57Hydraulic mining — Hydraulic mining, or hydraulicking, is a form of mining that employs water to dislodge rock material or move sediment. Previously, the use of a large volume of water had been developed by the Romans to remove overburden and then gold bearing… …
58Athabasca Oil Sands — The Athabasca Oil Sands (also known as the Athabasca Tar Sands) are large deposits of bitumen, or extremely heavy crude oil, located in northeastern Alberta, Canada. These oil sands consist of a mixture of crude bitumen (a semi solid form of… …
59Salt dome — A salt dome is a type of structural dome formed when a thick bed of evaporite minerals (mainly salt, or halite) found at depth intrudes vertically into surrounding rock strata, forming a diapir.The salt that forms these domes was deposited within …
60Acid mine drainage — Yellow boy in a stream receiving acid drainage from surface coal mining. Acid mine drainage (AMD), or acid rock drainage (ARD), refers to the outflow of acidic water from (usually abandoned) metal mines or coal mines. However, other areas where… …
