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An ore is a type of rock that contains minerals with important elements including metals. The ores are extracted through mining; these are then refined to extract the valuable element(s). The grade or concentration of an ore mineral, or metal, as well as its form of occurrence, will directly affect the costs associated with mining the ore. The cost of extraction must thus be weighted against the contained metal value of the rock to determine what ore can be profitably extracted and what ore is

Metamorphic Art is art where an image is created out of smaller images.

Ore sorting refers to the process of separating an ore into separate constituent parts. Today, ore sorters are widely used in industrial mineral mines, diamond mines and base and precious metal mines. Ores are typically sorted to increase the efficiency of other refining processes, by reducing the amount of material to be processed while simultaneously increasing its purity. Modern, automated sorting applies optical sensors (visible spectrum, near infrared, X ray, ultraviolet), that can be

The Antelope Valley Union High School District (A.V.U.H.S.D.) is located in the Antelope Valley area of California, in northern Los Angeles County. The district includes eight public high schools, one trade school, and two continuation high schools in the cities of Palmdale and Lancaster and their immediate suburbs. The main district office is located in Lancaster. The Superintendent of the A.V.U.H.S.D. is David Vierra. The A.V.U.H.S.D. cares for all high school level education in the

The Westside Union School District in Southern California serves the western parts of Palmdale and Lancaster and their immediate suburbs, including Quartz Hill, Del Sur, Leona Valley, Antelope Acres, and Neenach. It enrolls kindergarten through eighth grade. High school education (ninth through 12th grades) is provided by the Antelope Valley Union High School District. As of 24 Oct 08, the district has approximately 8,900 students enrolled in 12 schools:

Shale is a fine grained, clastic sedimentary rock composed of mud that is a mix of flakes of clay minerals and tiny fragments (silt sized particles) of other minerals, especially quartz and calcite. The ratio of clay to other minerals is variable. Shale is characterized by breaks along thin laminae or parallel layering or bedding less than one centimeter in thickness, called fissility. Mudstones, on the other hand, are similar in composition but do not show the fissility. Before the mid 19

The Shawangunk Ridge, also known as the Shawangunk Mountains or The Gunks, is a ridge of bedrock in Ulster County, Sullivan County and Orange County in the state of New York, extending from the northernmost point of New Jersey to the Catskill Mountains. The ridgetop, which widens considerably at its northern end, has many public and private protected areas and is not heavily populated, boasting only one settlement of consequence (unincorporated Cragsmoor). While in the past it was chiefly noted

State Route 4 is a state highway in the U.S. state of California, routed from Interstate 80 in the San Francisco Bay Area to State Route 89 in the Sierra Nevada. It passes through Ebbetts Pass and contains the Ebbetts Pass Scenic Byway, a National Scenic Byway. SR 4 roughly parallels the Sacramento San Joaquin River Delta, a popular area for boating and fishing. There are a number of accesses to marinas and other attractions. State Route 4 is part of the California Freeway and Expressway System

Dalkey Quarry is a disused granite quarry located in the Dublin suburb of Dalkey. It was used for quarrying during the 19th century, and is now part of Killiney Hill Park, a public park. It is one of Ireland's most significant rock climbing crags to Dubliners. In 1815 1817, quarrying started on Dalkey Hill in order to supply granite for the construction of the new harbour pier at nearby Dún Laoghaire, as well as for the construction of the South Bull Wall (part of the outer defences of Dublin