The blast was caused by fuel leaking into a dry bay and igniting on contact with a hot air pipe.

BBC: Nimrod families launch legal bid

In the Taishan ruling, he cited reports from experts including Sandia National Laboratory showing that sulfur fumes escaping the tainted wallboard can cause pitting in wires and copper pipe as well as heating and air conditioning systems.

FORBES: Wallboard Decision Could Bite U.S. Companies

Consider media accounts of how WD-40 was used to extract a python from a bus exhaust pipe or a burglar stuck in an air duct (yes, he was arrested).

FORBES: Greasy Coca-Cola

Consider the newspaper accounts of how WD-40 was used to extract a python from a bus exhaust pipe or a burglar stuck in an air duct (yes, he was arrested).

FORBES: Johnny One-note

This somewhat dangerous device had a six foot barrel, was made out of PVC irrigation pipe of varying diameters, and was powered by compressed air.

FORBES: The Supersonic Ping-Pong Gun

As the liner is inserted into the pipe, it is turned inside out and forced through using water or air pressure.

BBC: Sewer renovation work to begin in Glastonbury

Last summer an 83-year-old pipe in Manhattan burst, sending a geyser of steam and debris into the air.

ECONOMIST: Infrastructure