Gold Mining techniques we use in Venezuela to get gold with Marc Lubaszka.
Surface gold mining is done by removing (stripping) surface vegetation, dirt, and, if necessary, layers of bedrock in order to reach buried gold deposits.
Techniques of surface gold mining include: open-pit mining, which is the recovery of gold from an open pit in the ground, quarrying, identical to open-pit mining except that it refers to sand, stone and clay; strip mining, which consists of stripping surface layers off to reveal ore/seams underneath; and mountaintop removal, which involves taking the top of a mountain off to reach gold deposits at depth.
Most (but not all) placer deposits, because of their shallowly buried nature, are mined by surface methods.
Finally, landfill mining involves sites where landfills are excavated and processed. Landfill gold mining has been thought of as a solution to dealing with long-term methane emissions and local pollution.