After four years of experimentation, the device was perfected with an iron pipe filled with TNT. BENGALURU: The Bangalore Torpedo, an anti-obstacle explosive device, developed by the Madras ...

Bangalore blast: Improvised Explosive Device (IED) used near BJP office, say sources. Edited by: Prasad Sanyal; Bangalore; Apr 17, 2013 16:09 pm IST. Published On Apr 17, 2013 14:02 pm IST.