OURAY - It was carbon monoxide that killed two miners and injured 20 others in a mining accident in the San Juans.
Nick Cappanno, 34, of Montrose and Rick Williams, 59, of Durango were killed at a mine near the southwest Colorado town of Ouray Sunday.
The manager of the Revenue Virginius mine said the miners were about a mile and a half from the exit when they were exposed to the gases.
Manager Rory Williams could not say what led to the fumes but said it's a very rare situation. The Mine Safety and Health Administration was investigating.
Williams said he was "saddened" by the deaths, adding that he personally knew the miners who died.
He declined to release their names, saying it would be up to their families.
The miners were never trapped, Williams said. Of the 20 surviving miners who were injured, he said all had either been released from the hospital or were in good condition.
(KUSA-TV © 2013 Multimedia Holdings Corporation with The Associated Press)