Here's a result of copper theft: Not sure if it was cable or mains-gas pipe, [usually copper in the UK.]
By pure luck, no one was hurt. Note at 0.25 the front door swings shut as an overpressure wave travels in front of the actual gas explosion.

http://www.telegraph.co.uk/news/new...uge-gas-explosion-at-Yorkshire-home.html


Wood work but can't!