us geological survey minerals information 1997 1 c opper by daniel l edelstein mine production of recoverable copper in the united states continued its decade long upward trend rising about to a record high level however as result decline average price received for refined estimated value domestic remained unchanged at 4 6 billion while maintained position world s second largest producer accounting 17 percentage share global chile where increased 9 and it has 65 since 1993 was increasing more than 28 retained consumer 18 21 consumption respectively consumpt ion rose 5 7 both reaching levels 36 mines operating 10 that produced reportable quantities top accounted almost 99
