July 2002 by StaffExcerpts from California Mining Journal, our original title, published 50 years ago this month.
- It’s time to trim the fat…
- Springfield dog owners better watch their step…
When working fine gold placers with a drywasher, there are some natural variables that can be beneficial as well as others that can be a hindrance to achieving good recovery.
It could be worth $250! We are on a quest to find out who has the oldest surviving copy of our monthly Journal.
The nugget was cast aside with larger rocks during the screening process, but it was found later by an employee...
Indians used asphalt from oil seeps in California for caulking boats and other objects long before the white man arrived. Spaniards noted seeps as early as 1542, and the Portola expedition in 1769 used oil for wagon axles and as a fuel. Spaniards also used crude stills for obtaining lamp oil for use in the missions.
This article deals with copper exploration, but it is relevant to exploration for other minerals. I will use the geology of the Copper Creek area in Pinal County, Arizona, as an example.
The Bawl Mill • Our Readers Say • Siskiyou National Forest Update • Company Looks at Restarting Sunshine Mine • Piedmont Gold • Gold & The Dollar • Picks & Pans: Exploring Wyoming's High Desert • Sons of Gwalia & Herbert Hoover • Prospecting on the Yukon River • Placer Gold in Arizona • The Fire Assay of Fly Eyes • Bill Could Create New Silver Market • 2002 Inductees to the National Mining Hall of Fame • Mining Stock Quotes and Mineral & Metal Prices • Melman on Gold & Silver • Mystery of Olmec Jade Solved