South Fork, Colo. (AP) Eight construction workers have been injured in an explosion at a construction site in South Fork.
Five of the workers were airlifted to Denver hospitals on Tuesday, but the extent of their injuries isn't known.
Rio Grande County Under-sheriff Charles Chick says that witnesses said the home being built collapsed in the explosion. He says fumes and heating fuel may have been ignited by space heaters.
Of the five workers taken to Denver, four workers were transported to the burn unit at the University of Colorado Health Sciences Center, while one was flown to St. Anthony's Hospital.
The Rio Grande Hospital in nearby Del Norte wouldn't release any information about the workers treated there.
South fork is a town of about 600 people at the western edge of the San Luis Valley.