Avalanche accident on the Dugway

Avalanche occured today on the Mt. Rose  Highway Corridor in an area known as the Dugway. The avalanche was about 60 feet below a GasX unit in the GasX slide path. This path and the others along this section of road have been regularly controlled with the GasX exploders throughout the season and as a result the snowpack in these paths is shallower and has some differenent characteristics than other non-controled areas. The GasX had not been shot prior to this  avalanche or at all in the recent storm cycle.  The avalanche was reported to the Sierra Avalanche Center by a motorist on the Mt. Rose HIghway who witnessed the event and saw other motorists free the snowboarder from the avalanche. The victim left the site before any rescue personel arrived, it  is unknown at this time wheteher this was a full or partial burial. A motorist also  called Washoe County Sheriff, I was dispatched to the site with two other patrollers and my dog. When we arrived we were informed that a beacon search had been done and nothing turned up. There was an obvious large hole about 5 feet uphill from the toe about 3 feet deep where the victim was freed from. I ran the dog through the site andfound no other reason to believe anyone was buried we also had three patrollers probing likely areas. We performed control work on adjacent slopes using hand charges and had results similiar to the snowboarder triggered avalanche on one adjacent slope. I did a quick crown profile as well.