National Archives & Records Administration (Denver, Entry 49)

Electrolytic refining. In old descriptions this was called the "refining house" because of the roof-like fume collection hood.

National Archives reference: record group 104, entry 49 (Denver), box 1, folder 1.

Ingot quenching equipment. Label on horizontal pipe at center reads "overflow from furnace." At right arrows point to "storage tank" and "pump." Initials S.F. at lower right border.

National Archives reference: record group 104, entry 49 (Denver), box 1, folder 1.

Damaged coil from milling machine.

National Archives reference: record group 104, entry 49 (Denver), box 1, folder 1.

Coining room view from mezzanine level looking down. Presses are at far right next to windows. Diagonal chutes deliver planchets into circular receiving bins. Press operators scoop planchets from these, and empty them into conical receptacles on each press.

National Archives reference: record group 104, entry 49 (Denver), box 1, folder 1.

Coining Department. Ingot quenching tank (front) and associated apparatus. Original has letters fS.F.f at lower right outside of subject area.

National Archives reference: record group 104, entry 49 (Denver), box 1, folder 1.

Large portable fan with protective wire screen.

National Archives reference: record group 104, entry 49 (Denver), box 1, folder 1.

(Unidentified)

National Archives reference: record group 104, entry 49 (Denver), box 1, folder 1.

Cold rundown mill for metal coils.

National Archives reference: record group 104, entry 49 (Denver), box 1, folder 1.

Special roller used to flatten coins and other samples for assay.

National Archives reference: record group 104, entry 49 (Denver), box 1, folder 1.

Electrolytic refining area. Close-up.

National Archives reference: record group 104, entry 49 (Denver), box 1, folder 1.