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Spacecraft — Spaceship redirects here. For other uses, see Spaceship (disambiguation). More than 100 Russian Soyuz manned spacecraft (TMA version shown) have flown since 1967, originally for a Soviet manned lunar program, but currently supporting the… … Wikipedia
Extrusion — is a process used to create objects of a fixed cross sectional profile. A material is pushed or drawn through a die of the desired cross section. The two main advantages of this process over other manufacturing processes is its ability to create… … Wikipedia
coal utilization — Introduction combustion of coal or its conversion into useful solid, gaseous, and liquid products. By far the most important use of coal is in combustion, mainly to provide heat to the boilers of electric power plants. Metallurgical coke… … Universalium
iron processing — Introduction use of a smelting process to turn the ore into a form from which products can be fashioned. Included in this article also is a discussion of the mining of iron and of its preparation for smelting. Iron (Fe) is a… … Universalium

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