Magnetic Separation - Mine Engineer.Com provides mining ...
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In this Instructable, I will show you how to extract gold from computers using products most people have lying around in their homes. The way I extract the gold is relatively straight-forward and pretty easy, but the chemicals used are very dangerous and should not be performed without proper knowledge and equipment.
How to Extract Gold From Electronics - Instructables
The Beep Mat is an efficient, user friendly, inexpensive electromagnetic survey. With the Beep mat, you can sample as many conductive outcrops and floats in one season as a mining company drills in many years of standard operation.