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Heavy snowfall has created avalanche conditions on the Coq. Plow crews are barely able to keep up. When traffic starts backing up in high-risk avalanche zones, highway authorities decide to close the road in both directions. A team of avalanche techs flies up the mountain in helicopters to drop concussion bombs and release the build-up, but bad weather hampers their first attempt. With the Coq closed overnight, trucks are using the back roads to get through. Jamie's team is called out to recover a semi that went over the cliff on rural Highway 3. The next day is a battle on all fronts to get the Coq open - with helicopter teams dropping more bombs, highway crews faced with two feet of accumulation, and Jamie's team forced to call in a second rotator.
Source: Discovery Channel