What are the main methods of mining? . American Geosciences .
There are four main mining methods: underground, open surface (pit), placer, and . involves dissolving the mineral resource in place then processing it at the.
Explosives Mining Types GlobalSecurity
Jul 7, 2011 . Mining is the search for, extraction, and beneficiation and processing of solid . Both surface and underground mining are widely used in the extraction of coal. .. Open pit mining is the primary domestic source of copper.Get Price