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Arrastra demonstration in Liberty, Washington, 2007 An arrastra (or arastra) is a primitive mill for grinding and pulverizing (typically) gold or silver ore . Its simplest form is two or more flat-bottomed drag stones placed in a circular pit paved with flat stones, and connected to a center post by a long arm.
Arrastra Mountain Wilderness is a protected wilderness area centered around the Poachie Range, a northwest–southeast trending mountain range that rises to almost 5,000 feet (1,500 m). Established in 1990 under the Arizona Desert Wilderness Act , the area is managed by the Bureau of Land Management Colorado River District.
The Arrastra Mountain Wilderness comprises almost 100% of the Poachie Range. Both the Big Sandy and Santa Maria Rivers are mostly contained in the wilderness, as well as People's Canyon in the east. Both the Big Sandy and Santa Maria Rivers are mostly contained in the wilderness, as well as People's Canyon in the east.
Arrastra, simple mill for grinding and pulverizing (typically) gold or silver ore. Roller mill , an equipment for the grinding or pulverizing of grain and other raw materials using cylinders Stamp mill , a specialized machine for reducing ore to powder for further processing or for fracturing other materials
Location of Comanche County in Oklahoma. This is a list of the National Register of Historic Places listings in Comanche County, Oklahoma.. This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Comanche County, Oklahoma, United States.
September 17, 1974 (About 11.2 miles (18.0 km) southwest of Cashmere, in Wenatchee National Forest: Cashmere: 3: Bridge Creek Cabin-Ranger Station: February 10, 1989 (In Bridge Creek Campground, southwest of Stehekin Valley Trail, about 13 miles (21 km) northwest of Stehekin, in North Cascades National Park
Arrastra Mountain: Arizona BLM Colorado River District BLM AZ 129,800 202.8 52,500 525: November 28, 1990: Arrow Canyon: Nevada BLM Southern Nevada District BLM NV 27,502 42.972 11,130 111.30: November 6, 2002: Ashdown Gorge: Dixie National Forest: USFS UT 7,043 11.005 2,850 28.50: September 28, 1984: Aubrey Peak: Arizona BLM Colorado River ...
Arrastra Creek is a stream in the U.S. state of Oregon. [1] It is a tributary to Wagner Creek. Arrastra Creek was named after the arrastra, a piece of mining ...