Replies

Here's some more from Wiki and Google:

http://en.wikipedia.org/wiki/Improvised_explosive_device

Nepal

IEDs were also widely used in the 10-years long civil war of the Maoists in Nepal, ranging from those bought from illicit groups in India and China, to self-made devices. Typically used devices were pressure-cooker bombs, socket bombs, pipe bombs, bucket bombs, etc. The devices were used more for the act of terrorizing the urban population rather than for fatal causes, placed in front of governmental offices, street corners or road sides. Mainly, the home-made IEDs were responsible for destruction of majority of structures targeted by the Maoists and assisted greatly in spreading terror among the public.

Disposal of a pressure cooker with 25lbs of HME (Home Made Explosives)

http://www.youtube.com/watch?v=4UNw1h6JaUc

DHS warning from 2010 about pressure cookers!

http://info.publicintelligence.net/DHSpressurecookerieds.pdf