Following the deaths of three Haines heli-ski guides in as many years, the Alaska Occupational Safety and Health Section is investigating measures the agency can take to improve worker safety.

Mike Buck, a safety consultant with AKOSH, started researching the issue about a year ago, after Southeast Alaska Backcountry Adventures guide Christian Cabanilla died in a cornice collapse in March 2013. A year before Cabanilla’s death, Alaska Heliskiing guide Rob Liberman died in an avalanche…