(Canby, OR) -- One person is recovering from minor injuries after an explosion in downtown Canby led to an evacuation of the area. It happened at Kittyhawk Products, which is a company that treats metal parts under high pressure. Three employees were working and one person suffered minor injuries. One of two large tanks exploded, blowing the roof off the building. The other tank needed several hours to cool. No hazardous materials were released. The Red Cross helped people who were evacuated due to the explosion.