Ask the Experts
April 2012 by Chris RalphQ: Graphite spray to prevent sticking when using cast iron molds
Q: What I would like to know is how to confirm if it is magnesite and the quality.
Gold out of auqa regia
Some fellow in Texas was selling a Spanish needle—a dousing device used to recover minerals in the old days. Do you know anything about these?
What is the ceramic-like material embedded with gold?
• How many parts per million make a project viable?
The Bawl Mill • Ask the Experts • Prospecting Homonyms • Revisiting an Old Mine in Idaho Reaps Rewards • Today's MSHA • Following Clues to a Lost Gold Deposit—The Northern Extension of the Cedarberg • Bering Sea Gold—Part I • Safety With a Tax Deduction • Who Says You Have to Own a Claim to Find Gold? • US Policies Holding Back Arizona • Judge Gives OK to Nevada Mining Tax Initiative • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices