Amalgamating tables, Bodie mill
Interior, Bodie mill
Ingot mold, Bodie mill
Railroad depot, Bodie, California, USA
Interior wall, railroad depot
Cyanide vat, Bodie, California, USA
IMG_3744
IMG_3745
Looking east
Headframe, Gold Hill, Nevada, USA
Gold Hill Hotel
IMG_6713
PC130218
Headframe, Gold Hill, Nevada, USA
Snoqualmie Falls
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Bodie Mill
Bodie Mill
Supports for amalgamating tables
Electric switchboard, Bodie Mill
Electrical equipment, Bodie Mill
Electric motor, Bodie mill
Lathe in Bodie Mill
Workshop, Bodie mill
Camshaft for a stamp mill
Camshaft for a stamp mill
Conveyor track, Bodie mill
Mill timber closeup, Bodie
Mill timber closeup, Bodie
Bodie Mill
Cyanide vat, Bodie mill
Bodie Mill
Ore cart
Mill(?) Foundation, Palmetto District
Mill(?) Foundation, Palmetto District
Lake Tahoe
Heap leach
View toward Bolivia
Burnt Canyon
Burnt Canyon
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Amalgamating tables, Bodie mill


Note the stamp mills at the head of the tables. The crushed ore would spill across these tables, which contained pools of mercury that would trap the large gold fragments. The fines would wash on through to be cyanided in vats beyond. Bodie still used amalgamation as the first processing step, evidently thinking it was cost-effective for the big pieces. They no longer had to worry about overcrushing the ore, too. When amalgamation alone was used, the finest pieces of gold washed on through and were lost, so you didn't want to pulverize the ore _too_ much. However, with cyanide, the finer the pieces, the quicker they dissolved! So the more crushing, the better. (That's not a bug, it's a feature!)
The woman on the left is our guide in her Edwardian-era garb.
The woman on the left is our guide in her Edwardian-era garb.
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