foundry crucible, casa de la moneda, potosi
steam boiler with pressure valves in the basement of the old mint, san francisco
old mint, gas pipes in basement
empty computer room, abandoned building basement
hinges, safe door, san francisco old mint
antique safe door
hermann safe co.
old mint, antique gas lights
antique lamps with glass balls
antique chandeliers with light balls, san francisco old mint
entrance, stair and columns
old mint
old safe door, decoration
american eagle on safe door
gas light cut-off valves
underground vaults in basement
pressure valves on steam boiler
casa de la moneda, potosi, bolivia
casa de la moneda, courtyard, potosi, bolivia
mint coining machine
roller presses, casa de la moneda, potosi
stationary steam engine
minting, coining machine
coining machine, minting
steam boiler furnace
stationary steam engine, casa de la moneda, potosi, bolivia
steam boiler, morgan, orr & co
wood gears of an ancient roller press machine
old roller press powered by wooden gears
wood gears, casa de la moneda, potosi, bolivia
wooden gears, casa de la moneda, potosi
human powered machine, drive shaft, casa de la moneda, potosi, bolivia