Ask The Experts: How to remove precious metals from lead?
August 2010 by Thom Seal, PhD, PEI have a large amount of precious metals, gold and silver, mixed in with lead. Cupelling is expensive. What method can I use to extract the gold and silver without cupelling?
A recent online survey on our homepage confirmed what we expected...
MSHA (Mine Safety and Health Administration) reports that a pair of miners used oxygen-supplying self-rescue devices to save two of their co-workers who were in danger of suffocation at the Ohio Valley Coal Company's Powhatan No.6 mine near St. Clairsville, Ohio.
Honduras, about the size of Ohio, is one of the “banana republics” in Central America. The central part of the nation is mountainous, with peaks reaching 9,000 feet.
I wandered back across the river, wading through the rapids and slipping at least three more times. I couldn’t believe how slick these rocks were! Once on the other side, I sat down for a few moments to review my plan of attack and lick my wounds.
The Drum Mountains are located 23 to 30 airline miles northwest of Delta (pop. 2,000), in west-central Utah. The desert mountains rise to 7,233 feet and receive only 8 inches of precipitation a year.
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