Unknown2019-09-132019-09-131958-12-15RPB-106-04-007http://hdl.handle.net/20.500.11867/1800710 sheets 8.5 x 11 inch letterhead. Final sheet crossed through with [pencil.Collection of news releases include a description of Holden Metal Mine, the golden anniversary of the Bureau of Mines, the rise of mineral production values, and more.Government documentsMining;Mining--Gold Mining;