[Miner crouching and examining mercury, Almaden, Spain]

[Miner crouching and examining the mercury, Almaden, Spain]

[Miners doing the Republican salute, Almaden, Spain]

[Miners doing the Republican salute, Almadén, Spain]

[Worker emptying a bag of mercury, Almaden, Spain]

[Miners pushing a wagon of cinnabar, Almaden, Spain]

[Miners doing the Republican salute, Almaden, Spain]

[Miners pushing a wagon of cinnabar, Almaden, Spain]