sludge (3 photos)

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refining the sludge - ore processing plant - candelaria silver mine - potosi (bolivia), bolivia, cerro rico, factory, machine, man, mina candelaria, mine, mining, ore processing plant, potosí, sludge, worker
refining the sludge, ore processing plant, candelaria silver mine, potosi, bolivia
sludge - ore processing plant - silver mine - potosi (bolivia), bolivia, cerro rico, factory, machine, mina candelaria, mine, mining, ore processing plant, potosí, sludge
sludge, ore processing plant, silver mine, potosi, bolivia
ore processing plant - potosi (bolivia), bolivia, cerro rico, factory, machines, man, mina candelaria, mine worker, miner, mining, ore processing plant, potosí, safety helmet, sludge, workers
ore processing plant, potosi, bolivia