blast-furnace well
81Colorado Fuel and Iron — The Colorado Fuel and Iron Company (CF I) was a large steel concern. By 1903, it was largely owned and controlled by John D. Rockefeller and Jay Gould s financial heirs.[1] While it came to control many plants throughout the country, its main… …
82Joseph G. Butler, Jr. — Infobox Person name = Joseph G. Butler, Jr. image size = 190px birth date = birth date|1840|12|21|mf=y birth place = Mercer County, Pennsylvania death date = death date and age|1927|12|20|1840|12|21|mf=y death place = Youngstown, Ohio known for …
83History of science — History of science …
84Maesteg — Coordinates: 51°37′N 3°39′W / 51.61°N 3.65°W / 51.61; 3.65 …
85Continuous production — Part of a series of articles on Industry Manufacturing methods Batch production • Job production Continuous production Impro …
86building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …
87Youngstown, Ohio — Youngstown redirects here. For other uses, see Youngstown (disambiguation). Coordinates: 41°5′47″N 80°38′57″W / 41.09639°N 80.64917°W …
88METALS AND MINING — In the Bible Six metals are mentioned in the Bible and in many passages they are listed in the same order: gold, silver, copper, iron, tin, and lead. Antimony is also mentioned. The metals are referred to in various contexts, including methods of …
89Watermill — This article is about a type of structure. For other locational uses see Milldam . For details of the technologies, see Water wheel and Mill machinery . A watermill is a structure that uses a water wheel or turbine to drive a mechanical process… …
90Medieval technology — Pumhart von Steyr, a 15th century supergun …
