An investigation into an explosion at a Vancouver Island military base last year has found that contractors working near a live natural gas line misunderstood the risk of a blast.

The explosion happened on Nov. 18, 2021 at Canadian Forces Base Comox — also known as 19 Wing Comox — and left 28 people injured, including six civilians and multiple members of the military.

Technical Safety B.C. (TSBC), a regulator of technical systems and equipment in the province, released a report into the incident last week.

The east side of the barracks building after the explosion on Nov. 18, 2021 at CFB Comox on