The area had been open for more than a day and control work had been done in the last 24 hours of the accident. The two were apparently skiing together. The Canyons reports that their ski patrol arrived on the scene within four minutes of the call, and they found the man four minutes later. They uncovered the boy about 25 minutes after.
This was an inbounds avalanche. Utah has an "Inherent Risk" statute on the books which does not protect ski area operators from liability when "an injury is caused by an unnecessary hazard that could have been eliminated by the use of ordinary care, such a hazard is not, in the ordinary sense of the term, an inherent risk of skiing and would fall outside [the statute]." Adler, with legal training, says this will be one to keep "on the watch" list beyond the sadness of the loss of life just before Christmas.