boom sheave

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• mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… …   Universalium

• Sail-plan — A sail plan is a set of drawings, usually prepared by a naval architect. It shows the various combinations of sail proposed for a sailing ship.The combinations shown in a sail plan almost always include three configurations:A light air sail plan …   Wikipedia

• Traction engine — A traction engine is a self propelled steam engine used to move heavy loads on roads, plough ground or to provide power at a chosen location. The name derives from the Latin tractus , meaning drawn , since the prime function of any traction… …   Wikipedia

• Funicular — For the mathematical and architectural curve known as funicular, see catenary. Funicular in Valparaíso, Chile A funicular, also known as an inclined plane or cliff railway, is a cable railway in which a cable attached to a pair of tram like… …   Wikipedia