A large scale drill press seen here within the machine shop inside the Standard Stamp Mill. I happened to be with an engineer that knew, and understood, all of these large scale tools. Made it even more interesting (thanks Paul)
This is the door we go through to get to the actual stamping room where they crush the rocks
This shows the sluice box where the crushed rock flows downward pushed by water. Workers applied a coat of mercury within the sluice box that would hold the gold and silver particles as the material flowed down
