basic bessemer process
31Technological and industrial history of the United States — The technological and industrial history of the United States describes the United States emergence as one of the largest nations in the world as well as the most technologically powerful nation in the world. The availability of land and labor,… …
32List of Chinese inventions — A bronze Chinese crossbow mechanism with a buttplate (the wooden components have …
33SIDÉRURGIE — L’évolution de la sidérurgie dans les cent dernières années a été marquée par un accroissement considérable de la production d’acier brut: elle est passée, entre 1900 et 1993, de 35 à 725,3 millions de tonnes après un maximum de 785,1 millions de …
34Lackawanna Steel Company — Infobox Company company name = Lackawanna Steel Company company company type = Public genre = foundation = 1840 founder = George W. Scranton, Seldon T. Scranton, William Henry location city = Scranton, Pennsylvania (1840 1902) Lackawanna, New… …
35Open hearth furnace — Engineering portal …
36Spain — /spayn/, n. a kingdom in SW Europe. Including the Balearic and Canary islands, 39,244,195; 194,988 sq. mi. (505,019 sq. km). Cap.: Madrid. Spanish, España. * * * Spain Introduction Spain Background: Spain s powerful world empire of the 16th and… …
37Blacksmith — For other uses, see Blacksmith (disambiguation). Blacksmith A blacksmith at work Occupation …
38Ironworks — An ironworks or iron works is a building or site where iron is smelted and where heavy iron and/or steel products are made. The term is both singular and plural, i.e. the plural of ironworks is ironworks .An integrated ironworks in the 19th… …
39Redox — Illustration of a redox reaction Redox (portmanteau for reduction oxidation) reactions describe all chemical reactions in which atoms have their oxidation state changed. This can be either a simple redox process, such as the oxidation of carbon… …
40Martin, Pierre-Émile — ▪ French engineer born Aug. 18, 1824, Bourges, Fr. died May 23, 1915, Fourchambault French engineer who invented the Siemens–Martin (open hearth) process, which produced most of the world s steel until the development of the basic oxygen process …
