blast-furnace well
71Cupellation — is a metallurgical process in which ores or alloyed metals are treated under high temperatures and carefully controlled operations in order to separate noble metals, like gold and silver, from base metals like lead, copper, zinc, arsenic,… …
72Lead — (pronEng|ˈlɛd) is a main group element with a symbol Pb ( la. plumbum). Lead has the atomic number 82. Lead is a soft, malleable poor metal, also considered to be one of the heavy metals. Lead has a bluish white color when freshly cut, but… …
73cement — cementable, adj. cementer, n. cementless, adj. /si ment /, n. 1. any of various calcined mixtures of clay and limestone, usually mixed with water and sand, gravel, etc., to form concrete, that are used as a building material. 2. any of various… …
74Economic history of China before 1911 — For developments after 1911, see Economic history of Modern China. A Chinese dragon seen floating among clouds, engraved on a golden canteen dated to the 15th century, during the …
75Edmund Blanchard — (c.1824 ndash; December 27 1886) was a lawyer and prominent businessman in Centre County, Pennsylvania. He was an early promoter of rail transportation in the area.The son of John Blanchard and Mary Miles, Blanchard was born in Bellefonte,… …
76Dudd Dudley — Dudd (Dud) Dudley (1600 ndash; 1684), was an English metallurgist, who fought on the Royalist side in the English Civil War as a soldier, military engineer, and supplier of munitions. He was one of the first Englishmen to smelt iron ore with coke …
77William Weston Young — (All information varified against Elis Jenkins extensive research, and against records housed at Friends Central Library, Friends House, Euston Rd. London, UK.) Biography William Weston Young, born 20 April 1776, Lewin s Mead, Bristol, England,… …
78open-hearth process — a process of steelmaking in which the charge is laid in a furnace (open hearth furnace) on a shallow hearth and heated directly by burning gas as well as radiatively by the furnace walls. [1885 90] * * * or Siemens Martin process Steelmaking… …
79Dud Dudley — Contents 1 Background and early life 2 Ironmaster 2.1 The Great Mayday Flood …
80Essar Steel Algoma — See also Algoma (Disambiguation)Infobox Company company name = Essar Steel Algoma, Inc. company company type = Corporate foundation = 1902 location = Sault Ste. Marie, Ontario, Canada key people = Sir Francis Clergue, Founder industry = steel… …
