Let us help you recover valuable metals. 888-437-1187

Magazine

Prospecting & Detecting

Selenium, Mercury and Suction Dredging—Studies Contradict CA State Water Resources Board

Federal and state regulatory agencies often cite mercury and methyl mercury in our waterways as a major factor for further restrictions on placer mining, and on suction gold dredge mining, in particular. However, these regulatory agencies are minimizing selenium and its neutralizing effects.

Online access required. Please .

Add a Comment

Additional articles that might interest you...

Proper Placer Sample Processing


...your sampling procedures should not be designed to catch gold your mining technique will never recover.

Ask the Experts


What are the tell signs of garnet deposits?

Ask the Experts


• Using drywashers to work desert gravels

Our 29-Troy-Ounce Golden Blessing


I picked up a noticeably heavy, fist-sized chunk of what I thought was a heavy piece of iron. After wiping some of the dirt and clay off, I still didn't know what on earth this object was.

Flood Plain Gold Deposits—What Are They Really?


We just completed a trip to another river, and yes, there was definite movement and redistribution of gravels, and other prospectors have seen this as well.

Dry Washing to Capture Fine Gold


There may be lots of smaller gold I cannot hear with a detector, but it looks just fine in my pan once it is out of the crevice.

Detecting My Way Across Australia—Pt II


It was round and I thought it was a dirty piece of lead shot, but after feeling the weight and giving it a spit-cleaning I knew I had one! Small as the nugget was, I felt happy and gratified for my little success

Subscription Required:
The Bawl Mill   • Ask the Experts - processing plants that can extract rare earth metals   • Ask the Experts - what does MDB&M stand for?   • Ask the Experts - proper mining claim procedures   • The Hughes Creek Placers, Montana   • Benefits of a Detecting Partner   • Excavator Testing Wet Placer Ground   • Hard Rock Milling: A Matter of Scale   • Paperwork Guy—A Cautionary Tale   • ICMJ Online Forum Now Available   • Detecting For Gold—Are You Up For It?   • A Trip Down the Yukon River   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices

Free:
Legislative and Regulatory Update

Advertisements

Garrett Electronics - trusted by real miners & prospectors!
Precious Metals Recovery plants and equipment
Live Auctions!
Fighting to keep public lands open to the public
Specializing in the processing of precious metal ores!
Watch prospecting shows on your computer right now
Free Online Sample Issue