Telluride is the county seat and most populous town of San Miguel County in the southwestern portion of the U.S. state of Colorado. The town is a former silver mining camp on the San Miguel River in the western San Juan Mountains. The first gold mining claim was made in the mountains above Telluride in 1875, and early settlement of what is now Telluride followed. The town itself was founded in 1878 as "Columbia", but due to confusion with a California town of the same name, was renamed Telluride in 1887 for the gold telluride minerals found in other parts of Colorado. These telluride minerals were never found near Telluride, but the area's mines for some years provided zinc, lead, copper, silver, and other gold ores.
The City of Idaho Springs is a Statutory City that is the most populous municipality of Clear Creek County, Colorado, United States. Idaho Springs is a part of the Denver–Aurora–Lakewood, CO Metropolitan Statistical Area. As of the 2010 census it had a population of 1,717. Idaho Springs is located in Clear Creek Canyon, in the mountains upstream from Golden, some 30 miles (50 km) west of Denver.
Eldora, previously known as "Eldorado" then "El-Dora", then Eldora or Camp Eldorado, and still called Happy Valley, is an unincorporated community and a census-designated place (CDP) located in and governed by Boulder County, Colorado, United States. The CDP is a part of the Boulder, CO Metropolitan Statistical Area. The population of the Eldora CDP was 142 at the United States Census 2010. The Nederland post office serves the area.
The town of Silverton is a Statutory Town that is the county seat of, and the only incorporated municipality in, San Juan County, Colorado, United States. Silverton is a former silver mining camp, most of which is now included in a federally designated National Historic Landmark District, the Silverton Historic District. The town population reached 637 in the U.S. Census 2010.
An adit is an entrance to an underground mine which is horizontal or nearly horizontal, by which the mine can be entered, drained of water, ventilated, and minerals extracted at the lowest convenient level. Adits are also used to explore for mineral veins.
Compressed air is air kept under a pressure that is greater than atmospheric pressure. Compressed air is an important medium for transfer of energy in industrial processes, and is used for power tools such as air hammers, drills, wrenches and others, as well as to atomize paint, to operate air cylinders for automation, and can also be used to propel vehicles. Brakes applied by compressed air made large railway trains safer and more efficient to operate. Compressed air brakes are also found on large highway vehicles.
The Comstock Lode is a lode of silver ore located under the eastern slope of Mount Davidson, a peak in the Virginia Range in Virginia City, Nevada, which was the first major discovery of silver ore in the United States and named after American miner Henry Comstock.
A jackhammer is a pneumatic or electro-mechanical tool that combines a hammer directly with a chisel. It was invented by William Mcreavy, who then sold the patent to Charles Brady King. Hand-held jackhammers are generally powered by compressed air, but some are also powered by electric motors. Larger jackhammers, such as rig-mounted hammers used on construction machinery, are usually hydraulically powered. Jackhammers are typically used to break up rock, pavement, and concrete.
Yule Marble is a marble of metamorphosed Leadville Limestone found only in the Yule Creek Valley, in the West Elk Mountains of Colorado, 2.8 miles (4.5 km) southeast of the town of Marble, Colorado. First discovered in 1873, it is quarried underground at an elevation of 9,300 feet (2,800 m) above sea level—in contrast to most marble, which is quarried from an open pit and at much lower elevations.
Crystal is a ghost town on the upper Crystal River in Gunnison County, Colorado, United States. It is located in the Elk Mountains along a four-wheel-drive road 6 miles (9.7 km) east of Marble and 20 miles (32 km) northwest of Crested Butte. Crystal was a mining camp established in 1881 and after several decades of robust existence, was all but abandoned by 1917. Many buildings still stand in Crystal, but its few residents live there only in the summer.
The Cliffs Shaft Mine Museum is a former iron mine, now a heritage museum, located on Euclid Street between Lakeshore Drive and Spruce Street in Ishpeming, Michigan. The museum, operated by "Marquette Range Iron Mining Heritage Theme Park Inc.", celebrates the history of the Marquette Iron Range. The site was designated a state of Michigan historic site in 1973 and placed on the National Register of Historic Places in 1992.
Arthur De Wint Foote (1849–1933) was an American civil engineer and mining engineer who impacted the development of the American West with his innovative engineering works and entrepreneurial ventures. In Northern California in the late 1890s, he designed and built the North Star Mine Powerhouse, the highest capacity impulse-turbine power-plant of the time, and now a California historic landmark; within that plant he designed and installed the then-largest Pelton wheel turbine. Later, he designed and built Foote's Crossing, a high bridge, and Foote's Crossing Road, both now memorialized as California and U.S. landmarks.
Joshua Tree National Park is an American national park in southeastern California, east of Los Angeles and San Bernardino, near Palm Springs. It is named for the Joshua trees native to the Mojave Desert. Originally declared a national monument in 1936, Joshua Tree was redesignated as a national park in 1994 when the U.S. Congress passed the California Desert Protection Act. Encompassing a total of 790,636 acres – slightly larger than the state of Rhode Island – the park includes 429,690 acres of designated wilderness. Straddling San Bernardino and Riverside Counties, the park includes parts of two deserts, each an ecosystem whose characteristics are determined primarily by elevation: the higher Mojave Desert and the lower Colorado Desert. The Little San Bernardino Mountains traverse the southwest edge of the park.
The Argo Gold Mine and Mill is a former gold mining and milling property in Idaho Springs, Colorado, featuring an intact gold mill built at the entrance of the Argo Tunnel. The tunnel was built between 1893 and 1910 to drain the gold mines in Virginia Canyon, Gilpin Gulch, Russell Gulch, Quartz Hill, Nevadaville, and Central City and allow easier ore removal. The success of the tunnel as an access route meant that a large volume of ore began exiting at the Idaho Springs entrance and a large mill was built to process it. At the time it was one of the largest such tunnels and milling operations in the world, directly recovering nearly $100 million in gold and sending another $200 million of high-value ores to smelters in Denver.
Miracle Hot Springs is an unincorporated community in the Kern River Valley, in Kern County, California. It is located along the Kern River in the Sequoia National Forest 10 miles (16 km)West of Lake Isabella, California, at an elevation of 2,382 feet (726 m).
The Argo Tunnel is a 4.16-mile (6.69 km) mine drainage and access tunnel with its portal at Idaho Springs, Colorado, USA. It was originally called the Newhouse Tunnel after its primary investor, Salt Lake City mining magnate Samuel Newhouse, and appears by that name in many industry publications from the time period when it was constructed. The tunnel intersected nearly all the major gold mines between Idaho Springs and Central City, and is the longest such drainage tunnel in the Central City-Idaho Springs mining district.
The Knight Block is a historic building located on South University Avenue in downtown Provo, Utah, United States. It is listed on the National Register of Historic Places.
The Osgood–Kuhnhausen House, also known as Carina's Cottage, is located on Redstone Boulevard in Redstone, Colorado, United States. It is a timber frame structure built at the beginning of the 20th century in the Tudor Revival architectural style. In 1983 it was listed on the National Register of Historic Places.
Blistered Horn Mill, also known as the Brunswick Mill, is an abandoned stamp mill located 4 miles (6.4 km) south of Tincup in Gunnison County, Colorado, United States. Built around 1890 by the Brunswick Mining and Milling Company, the mill processed gold ore from the nearby Jimmy Mack and Blistered Horn Tunnel mines.
In the mid-19th century, Colorado Springs was a center of mining industry activity. Coal was mined in 50 mines in the area and towns, now annexed to Colorado Springs, were established to support residents of the coal mining industry.
