Goldcorp Narrow-Vein Mining Equipment Project The Goldcorp project in Red Lake, Ontario is Canadas largest gold mine and has one of the worlds richest gold deposits. To operate in the mines unusually narrow-vein drifts, Marcotte was contracted to design and fabricate a new smaller line of its vehicle-mounted underground equipment ... 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. This process is not supposed to be lucrative.