powder coal
41Industrial Review — ▪ 1994 Introduction The period since 1990 was proving a difficult time for the older industrialized economies, which had suffered from prolonged recession at home, and also for the previously centrally planned economies of Eastern Europe… …
42technology, 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… …
43Fort Union Formation — The Fort Union Formation is a geologic unit containing sandstones, shales, and coal beds in Wyoming, Montana, and parts of adjacent states. In the Powder River Basin, it contains important economic deposits of coal, uranium, and coalbed methane.… …
44Fireworks — Firework redirects here. For other uses, see Fireworks (disambiguation). Pyrotechnics portal …
45Potrero Point — San Francisco is the location of the earliest and most important industrial facilities in the Western United States on the eastern extension of San Francisco s Potrero Hill, a natural land mass extending into San Francisco Bay south of Mission… …
46steel — steellike, adj. /steel/, n. 1. any of various modified forms of iron, artificially produced, having a carbon content less than that of pig iron and more than that of wrought iron, and having qualities of hardness, elasticity, and strength varying …
47Cement kiln — Cement kilns are used for the pyroprocessing stage of manufacture of Portland and other types of hydraulic cement, in which calcium carbonate reacts with silica bearing minerals to form a mixture of calcium silicates. Over a billion tonnes of… …
48Canadian Pacific Railway — Infobox SG rail railroad name=Canadian Pacific Railway logo filename=Canadian Pacific Logo 1996.png logo size=162 system map size=300 map caption=Canadian Pacific system map as of 2004 (does not include DM E and IC E trackage). old gauge=… …
49Wyoming — Wy redirects here. For the Australian micronation, see Principality of Wy. This article is about the U.S. state of Wyoming. For other uses, see Wyoming (disambiguation). State of Wyoming …
50Contributors — ▪ 2000 Adams, Andy. Editor and Publisher, Sumo World. Author of Sumo; Sumo World Record Book. • sports and games: Judo; Wrestling: Sumo Ahn, Ki suk. Assistant Editor, Shindonga of Donga Ilbo. • biographies (in part) Alder,… …
