Leading mining historian Kerby Jackson introduces us to a classic mining publication on the Gold Mining Industry in Arizona. Written in 1942, this hard to find publication includes valuable facts on how to identify common metals in the field. Included are field tests for gold, silver, copper, arsenic, antimony, iron, chromium, manganese, lead, cobalt, nickel, tin, tungsten, zinc, vanadium and many other minerals utilizing reagents, blowpipes and other methods. This small booklet will be found to be of immense value to the miner who is looking to learn about hard rock mining. Note: This edition is a perfect facsimile of the original edition and is not set in a modern typeface. As such, some type characters and images might suffer from slight imperfections or minor shadows in the page background.