industrial-scale ore mining
71Roman engineering — Origins The Romans are generally famous for their advanced engineering accomplishments, although some of their own inventions were improvements on older ideas, concepts and inventions. Technology for bringing running water into cities was… …
72History of Swansea — Swansea (Welsh: Abertawe ) is a city and local government area in south Wales. The history of Swansea includes a continuous period of human occupation stretching back one thousand years, and there is evidence for consistent occupation of the… …
73Cliffs Natural Resources — Type Public (NYSE: CLF …
74Oil shale extraction — is an industrial process in which kerogen mdash;a mixture of organic chemical compounds (including hydrocarbons) found in oil shale mdash;is converted into synthetic crude oil through pyrolysis. In pyrolysis, oil shale is heated in the absence of …
75Boron — (pronEng|ˈbɔərɒn) is a chemical element with atomic number 5 and the chemical symbol B. Boron is a trivalent nonmetallic element which occurs abundantly in the evaporite ores borax and ulexite. Boron is never found as a free element on… …
76Nuclear program of Iran — See also: Iran and weapons of mass destruction Nuclear program of Iran …
77Ruhr — /roor/, n. 1. a river in W Germany, flowing NW and W into the Rhine. 144 mi. (232 km) long. 2. a mining and industrial region centered in the valley of the Ruhr River. * * * ▪ river and region, Germany river and major industrial region… …
78Ceramic engineering — Simulation of the outside of the Space Shuttle as it heats up to over 1,500 °C (2,730 °F) during re entry into the Earth s atmosphere Ceramic engineering is the science and technology of creating objects from inorganic, non metallic… …
79Cleveland-Cliffs — Inc. is a Cleveland, Ohio business firm that specializes in the mining and beneficiation of iron ore. The firm, which believes it is the largest producer of beneficiated iron ore pellets in North America, is an independent company whose shares,… …
80OceanaGold — Corporation Type Public Traded as ASX: OGC NZX: OGC TSX: OGC …
