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 140 at the United States Census 2020. The Nederland post office serves the area.
Gold Hill 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 Gold Hill CDP was 218 at the United States Census 2020. The Boulder post office serves the area.
Borrowstounness is a town and former burgh and seaport on the south bank of the Firth of Forth in the Central Lowlands of Scotland. Historically part of the county of West Lothian, it is a place within the Falkirk council area, 17 miles northwest of Edinburgh and 6+3⁄4 miles east of Falkirk. At the 2011 United Kingdom census, the population of the Bo'ness locality was 15,100.
Keweenaw National Historical Park is a unit of the U.S. National Park Service. Established in 1992, the park celebrates the life and history of the Keweenaw Peninsula in the Upper Peninsula of the U.S. state of Michigan. As of 2009, it is a partly privatized park made up of two primary units, the Calumet Unit and the Quincy Unit, and 21 cooperating "Heritage Sites" located on federal, state, and privately owned land in and around the Keweenaw Peninsula. The National Park Service owns approximately 1,700 acres (690 ha) in the Calumet and Quincy Units. Units are located in Baraga, Houghton, Keweenaw, and Ontonagon counties.
Empire Mine State Historic Park is a state-protected mine and park in the Sierra Nevada mountains in Grass Valley, California, U.S. The Empire Mine is on the National Register of Historic Places, a federal Historic District, and a California Historical Landmark. Since 1975 California State Parks has administered and maintained the mine as a historic site. The Empire Mine is "one of the oldest, largest, deepest, longest and richest gold mines in California". Between 1850 and its closure in 1956, the Empire Mine produced 5.8 million ounces of gold, extracted from 367 miles (591 km) of underground passages.
Belmont is a ghost town in Nye County, Nevada, United States along former State Route 82. The town is a historic district listed in the National Register of Historic Places. It is Nevada Historical Marker number 138.
New Almaden, known in Spanish as Nueva Almadén, is a historic community and former mercury mine in the Capitancillos Hills of San Jose, California, located at the southwestern point of Almaden Valley in South San Jose. New Almaden is divided into two parts: the mines and much of their immediate surroundings, including historic ghost town settlements in the Capintancillas, which together form the Almaden Quicksilver County Park, and the largely residential historic district surrounding the Casa Grande.
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.
Kentucky Camp is a ghost town and former mining camp along the Arizona Trail in Pima County, Arizona, United States, near the community of Sonoita. The Kentucky Camp Historic District is listed on the National Register of Historic Places and has been since 1995. As it is located within Coronado National Forest, the United States Forest Service is responsible for the upkeep of the remaining buildings within the Kentucky Camp Historic District.
The Pony Express Terminal, also known as the B. F. Hastings Bank Building, is a historic commercial building at 1000 2nd Street in Sacramento, California. Built in 1852, it was the western endpoint of the Pony Express from 1860 to 1861, the period of the service's operation. It was declared a National Historic Landmark in 1966. It now houses a museum dedicated to the history of Wells Fargo, and is part of Old Sacramento State Historic Park, itself a National Historic Landmark District. The B. F. Hastings Bank Building is a California Historical Landmark No. 606.
The Assay Office is a historic building at 210 Main Street in Boise, Idaho. It is significant for its role in the history of mining in Idaho, and was the first major federal government building in the Idaho Territory. During the first half of the 1860s, Idaho's gold production was the third highest in the nation. Due to the difficulty of transporting bulky, heavy ores the long distance to the nearest U.S. Mint in San Francisco, there was great demand for an assaying office in Idaho. Gold and other precious metals are not mined in a pure form. In order to place a value on an ore, the precious metal must be separated from the impurities. This is what an assay office does.
The Switzerland Trail is the site of a historic 3 ft narrow gauge railroad line that was operated at different times by the Greeley, Salt Lake and Pacific Railway, the Colorado and Northwestern Railroad, and the Denver, Boulder, and Western Railroad around the turn of the 20th century in the Colorado front range mining area near Nederland, Gold Hill, and Ward. The west end of the trail is listed on the National Register of Historic Places as the "Denver, Boulder and Western Railway Historic District".
The Calumet Historic District is a National Historic Landmark District that encompasses most of the village of Calumet, Michigan. The district was designated in 1989 for the community's importance in the history of the region's copper mining industry.
Ott's Assay Office is a historic assay office located at 130 Main Street in Nevada City, California. The building was constructed in 1851 as a drug store; James J. Ott opened his assay office in the back of the store in 1857. In 1859, Ott assayed a sample of silver ore discovered in the Washoe Country; this ore marked the discovery of the Comstock Lode, and the resulting silver rush eventually led to Nevada's statehood and several advancements in mining technology. The silver rush also gave Ott a reputation as a quality assayer; he ran his office until his death in 1907, and his son continued the business until 1955.
Loudoun House is a heritage-listed detached house at 16 O'Callaghan Street, Irvinebank, in the Shire of Mareeba in Queensland, Australia. It was built c. 1883-1884. It is also known as Moffat's House. It was added to the Queensland Heritage Register on 21 October 1992. It is now operated as the Loudoun House Museum by the Irvinebank School of Arts & Progress Association.
Assay Office is a heritage-listed mining laboratory at 167 Walsh Street, Mareeba, Shire of Mareeba, Queensland, Australia. It was built from 1916 to 1917. It is also known as Forestry Office. It was added to the Queensland Heritage Register on 28 July 2000.
