Canadian Explosives Research Laboratory - Research includes commercial explosives and equipment for use in hazardous locations, testing whether a product can be used safely in explosive atmospheres, and reducing the effects of accidental or terrorist blasts.
Explosives Science - A very good article on the subject.
How Stuff Works: Explosives - Articles providing information on the science behind bombs, missiles, handheld weapons and grenades.
IME - Institute of Makers of Explosives
ISEE - International Society of Explosives Engineers.
Ordnance and Explosives Mandatory Center of Expertise (CX) - Safety tips, glossary, tips, and hints for explosives and how to handle them.
Orica Explosives - Explosives wallpaper files and blast videos, also a section of explosives and safety.
Propellants, Explosives, Pyrotechnics - This international journal is a forum for the exchange of ideas in the areas of propellants, explosives, primers and pyrotechnics, combustion, and detonation processes.
Report on the Public Availability of Bomb Making Materials - Prepared by the DOJ in 1977.
Site 300 - Remote setting for experimental/explosives tests, Lawrence Livermore Labs.