The Colorado Division of Oil and Public Safety says no cause has been determined for the premature explosion of an avalanche shell that injured two state workers on Monday.
Federal investigators are trying to determine why an avalanche shell exploded Monday while state workers were trying to fire a round up a hillside to clear chasms filled with snow near Interstate-70.
The explosion that injured two state workers during avalanche mitigation may have been caused by a problem with the device used for mitigation.
Two state employees were injured Monday morning after an explosive used in avalanche mitigation detonated prematurely.
An avalanche closed U.S. 40 in both directions over Berthoud Pass and buried cars in the slide Friday afternoon. It has since been reopened.
The Colorado Department of Transportation is doing what it can to keep drivers safe in the high country by conducting avalanche mitigation.
With the threat of more snow combined with what has already accumulated, Colorado Department of Transportation crews have been busier than ever monitoring avalanche paths in the high country.
Recent snowfall after a dry start to the season has led to a considerable avalanche risk. That applies to all mountains in the central part of Colorado.