open pit mining method

Dirty Gold Mining Methods & Rising Environmental Costs Gold mining has been a dirty process for more than 4500 years, with conditions worsening as easily accessible deposits of gold have declined and open pit mining has ... Pollution from Open Pit Mining - Pollution from Open Pit Mining. Uploaded by. Francisco Leiva. ... The opencast mining method of extraction begins with the cut down of the forest and vegetation; ... 2012 Americas School of Mines 2012 Americas School of Mines W Scott Dunbar University of British Columbia Basics of Mining and Mineral Processing. ...    Read More