CA Gold Rush Gold Mining Double Jack Mine Drill 3 of 4 ...
ca gold rush gold mining double jack mine drill 3 of 4. sold for: ... this listing is for a 24" single or double jack gold mining drill ... if the miner worked in pairs one holding the steel while the other swung the hammerit was called "double jack" mining. the only difference between a single jack drill and a double jack drill is the ...