basic bessemer steel
31Thomas process — Basic process Ba sic proc ess (Iron Metal.) A Bessemer or open hearth steel making process in which a lining that is basic, or not siliceous, is used, and additions of basic material are made to the molten charge during treatment. Opposed to… …
32technology, history of — Introduction the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …
33metallurgy — metallurgic, metallurgical, adj. metallurgically, adv. metallurgist /met l err jist/ or, esp. Brit., /meuh tal euhr jist/, n. /met l err jee/ or, esp. Brit., /meuh tal euhr jee/, n. 1. the technique or science of working or heating metals so as… …
34Technological 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,… …
35Kelly, William — born Aug. 21, 1811, Pittsburgh, Pa., U.S. died Feb. 11, 1888, Louisville, Ky. U.S. ironmaster. He purchased ironworks in Eddyville, Ky., and began experiments with an air blast to prepare pig for conversion to wrought iron. Because of the… …
36Open hearth furnace — Engineering portal …
37List of Chinese inventions — A bronze Chinese crossbow mechanism with a buttplate (the wooden components have …
38Continuous casting — The macrostructure of continuously cast copper (99.95% pure), etched, ∅ ≈ 83 mm. Continuous casting, also called strand casting, is the process whereby molten metal is solidified into a semifinished billet, bloom, or slab for subsequent rolling… …
39Union Railroad (Pittsburgh, Pennsylvania) — Infobox SG rail railroad name=Union Railroad logo filename=Union Railroad %28Pittsburgh%29 Logo.gif logo size= old gauge= marks=URR locale=North Bessemer, Munhall, Homestead, McKeesport, West Mifflin, Clairton, Bessemer, Riverton start year=1896… …
40United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …
