Juan Capellín, Spanish / Mexican miner (séc.XVI)

Invented a new system of iron brazen mallets for increasing the capacity of milling (1567)

Invented a device for recovering the mercury in the mining of pure silver. There is some controversy here. For some authors is a large bronze bell named capelline but for others isn’t this the device that he invented

Invención para sacar la plata con azogue (1576)

Improved amalgamation technique for silver mining (1582)