Gold panning Origin of the Copper bottomed Gold Pan. RMN May 27, 1861 p.2,c.5 Prospectors earn living panning gold in Denver. RMN March 15, 1931 .6 sec.l Gold shortage due to low price, says Boulder miners. RMN March 18, 1931 p.12 Classes conducted by city. Mayor to teach unemployed to pan from Platte sand bars. RMN April 20, 1932 p.14-21 Denver gold mining school to open May 14. RMN April 27, 1932 p.9