AP – Authorities are trying to determine exactly what sort of accident occurred in a mine in southwestern Colorado that left two miners dead of carbon monoxide poisoning and injured 20 others.
The Ouray County sheriff’s office was called to the Revenue-Virginius mine at 7:20 a.m. Sunday, Ouray County spokeswoman Marti Whitmore said.
The miners were underground and were confirmed dead Sunday afternoon.
Authorities said at a late night news conference that the two died from carbon monoxide poisoning, according to The Denver Post. But the source of the gas was under investigation.
Both the Montrose Daily Press and the Post reported that investigators are looking at whether a blast on Saturday played a role.
The 20 injured were taken to area hospitals, and all but two were treated and released, Whitmore said. There was no word on the conditions of the two hospitalized workers.