hydraulic mining shovel
1mining — /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… …
2coal mining — Coal was very important in the economic development of Britain. It was used as fuel in the factories built during the Industrial Revolution and continued to be important until the 1980s. The main coalfields are in north east England, the north… …
3Shovel — For other uses, see Shovel (disambiguation). A man carrying shovels …
4Topic outline of mining — For a more comprehensive list, see the List of mining topics. Mining is the extraction of valuable minerals or other geological materials from the earth, usually (but not always) from an ore body, vein or (coal) seam. Materials recovered by… …
5Outline of mining — The following outline is provided as an overview of and topical guide to mining: Mining – extraction of valuable minerals or other geological materials from the earth, usually (but not always) from an ore body, vein or (coal) seam. Any material… …
6Placer mining — (pronounced plass er ) refers to the mining of alluvial deposits for minerals. This may be done by open pit (also called open cast mining) or by various forms of tunneling into ancient riverbeds. Excavation may be accomplished using water… …
7Coal mining — Men leaving a UK colliery at the close of a shift Surface coal mining in Wyo …
8Steam shovel — A steam shovel is a large steam powered excavating machine designed for lifting and moving material such as rock and soil. It is the earliest type of power shovel.Origins and development The steam shovel was invented by William Otis, who received …
9Surface mining equipment — An Auger machine is a large, horizontal drill, generally 3 feet or more in diameter and up to about 100 feet long. It can remove coal at a rate of more than 25 tons per minute. A bucket wheel excavator is a continuous digging machine equipped …
10California Gold Rush — The California Gold Rush (1848 ndash;1855) began on January 24, 1848, when gold was discovered by James Marshall at Sutter s Mill in Coloma, California. [E] vents from January 1848 through December 1855 [are] generally acknowledged as the Gold… …
