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The Holden/Marolt Mining and Ranching Museum is located on the former Holden Mining and Smelting Company facility on the western edge of the city of Aspen, Colorado, United States. It consists of one remaining building and the remains of some others. In 1990 it was recognized as a historic district and listed on the National Register of Historic Places, the only district in the city to be so recognized. It was built in 1891 to process ore mined from the mountains around the city into silver through lixiviation. Within two years it had to be shut down when a change in U.S. government policy led to a huge drop in silver production and drove it into bankruptcy. The buildings remained standing and were eventually bought by a local rancher to expand. His family later donated them to the Aspen Historical Society, which restored them and reopened the property as a museum of its early days as a mining boomtown. ==Buildings and grounds== The museum occupies a 2½-acre () tract on the south side of State Highway 82 just west of the residential neighborhoods in Aspen's West End. A mile to the west along the highway are the two Maroon Creek Bridges, the older of which is also listed on the Register. Aspen Valley Hospital is a thousand feet (300 m) to the southwest. The land is generally clear and open, reflecting its past agricultural use. The mature trees that shade many of the West End's houses end abruptly to the east, and there is a small grove of similar trees, all aspens, to the west of the museum. To the southeast is one of the ridges of Aspen Mountain, with the houses of South 7th Street near its foot. Across Highway 82 is Aspen's streets department, some dwellings of more modern construction, and a golf course. A system of paved bike paths and unpaved roads and paths leads to the museum from both Highway 82 and the official parking lot at the end of Marolt Place to the south. The main building is the plant's former sampling house, a one-and-a-half-story wood frame structure with vertical siding and a gabled roof from which a square cupola arises in the center. To the south are the remains of the salt sheds, one of which has been restored. In the vicinity are the remains of the smokestacks. portions of the sandstone foundation of the 250-foot-long () mill building.〔 As the only undisturbed mill site from Aspen's mining days, it is considered likely to have archeological potential. These two buildings and the site are considered contributing resources to the Register listing. Up a slight slope to the west is the original office building. It was converted into a residence in the 1940s by an added story and the addition of aluminum siding, so it alterations which affected its historic character too much for it to be considered contributing. A garage next to it, and the irrigation ditch that meanders around the entire property, are similarly non-contributing artifacts of the property's use as a ranch.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Holden/Marolt Mining and Ranching Museum」の詳細全文を読む スポンサード リンク
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