(Tigard, OR) -- Two men are being treated for burns following a hash-oil explosion in a gas station restroom in Tigard. Police say the men were trying to extract hash oil from marijuana in a bathroom at the 76 station on Southwest Greenburg Road. The explosion caused "significant" damage to the restroom. Police say 18-year-old Dennis Tapia and 23-year-old Jose Rios, both of Tigard, suffered severe burns.