Bureau of Mines Boulder City Experimental Station, Electrolytic Manganese Building, Date Street north of U.S. Highway 93, Boulder City, Clark County, NV

Significance: Building 500, as part of the Date Street Complex, was a component of the Bureau of Mines Electrometallurgical Research Facility located in Boulder City. As such, it is within the designated Boulder City Historic District. One of five buildings considered eligible that is to be demolished, this building retains sufficient integrity of form despite the removal of the cooling towers on the exterior and considerable interior remodeling. In a report of a survey of the Date Street Complex, Christine Pfaff of the Bureau of Reclamation determined Building 500 to be a contributing element to the District because it was constructed during the period of significance (1931-1945) for the District, contributed to the functioning of the Research Facility, and is significant as part of the complex under National Register Criterion a. The significance of the Boulder City Historic District is tied to the Boulder Canyon Project (Hoover Dam) and to the history of American City Planning. This was the first community constructed following the federal New Towns model, as well as the "first fully-developed experience in new town planning as promoted by the Community Planning Movement, a movement which is recognized as the force which most influenced contemporary community planning practices."
Unprocessed Field note material exists for this structure: N580
Survey number: HABS NV-35-E
Building/structure dates: 1941 Initial Construction
Building/structure dates: after. 1941- before. 1945 Subsequent Work
Building/structure dates: ca. 1957- ca. 1963 Subsequent Work