Ask The Experts

April 2016 by Chris Ralph

Ask The Experts: Sulfides and fluxes

July 2017

The concentrate is just the heaviest of the heavy minerals but some sulfides are sneaking in there also with the gold...

Ask The Experts - What’s the status of suction gold dredge permitting in California?

June 2020

Ask The Experts - Do these items qualify as mechanized equipment?

June 2019

Ask The Experts—Separating platinum from sands using bubbles

October 2011
I am trying to find any information about using bubbles to separate platinum from sands and small particles. I think it has to have a surfactant in the process. Do you know of this bubble tech?

Ask the Experts: gold per ton; improving assay method

May 2012
Q: How much gold do I have per ton and how can I improve my assay method?

Which Specific Gravity Test Works Best?

August 2011
Have you ever wondered how accurate specific gravity tests are in determining the amount of gold in a specimen?

Ask the Experts

March 2014
Breaking cemented gravels

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