Mining is big business in Peru , which is a major world producer of copper , silver , gold and other minerals . NEW : He renews his promise to regulate illegal mines . The nine miners had been trapped since the mine went underground . The crowd was waiting to rescue them as they emerged into the mine . In 2010 , 33 miners were rescued after being trapped underground for three days in Chile .
NEW : He renews his promise to regulate illegal mines . The nine miners had been trapped since the mine went underground . The crowd was waiting to rescue them as they emerged into the mine . In 2010 , 33 miners were rescued after being trapped underground for three days in Chile .