About: PROSPECTING FOR PLACER GOLD 1849 CALIFORNIA GOLD RUSH DOCUMENTARY 64444
That was simple and surprisingly informative.
My uncle had a prospector's license and I used to work with him when I was a young teen in the mid-60s in El Dorado and Placer counties for a couple weeks each summer. It was really just a hobby, but my uncle knew to put your new pan in your campfire and let it blue. This was done for two reasons; first, it burned off the oil residues left from manufacture and product storage and second, the dark blue allowed gold specks to show up better in the pan. I understand that today, pans are made from plastic, but I just wouldn't feel genuine without a metal pan.