Department of Energy, Mound Facility, Maintenance Building (M Building), One Mound Road, Miamisburg, Montgomery County, OH

Significance: M Building is significant for its role as a support building in the Mound Complex, which played a large part in the development of chemistry and metallurgy research for polonium-210 after the close of WWII. This radioactive isotope was used as a trigger mechanism for atomic weapons. At one time, the building was home to machining and plating operation for research, as well as for production of nuclear weapons parts. In addition, several lithium programs were conducted here during the 1950s and 1960s. In later years the building housed a wide variety of scientific processes, including some for various space missions.
Survey number: HABS OH-2470-J
Building/structure dates: ca. 1947 Initial Construction
Building/structure dates: ca. 1962- 1970 Subsequent Work
Building/structure dates: ca. 1982 Subsequent Work