yes, it's the same stuff, folks

Chemical fertilizer = bomb substrate. Now, in the name of anti-terrorism, they're working on formulating a form of nitrogen that's not so explosive. Wonder what the new trick will do to the fish when it runs off into the water supply?

"The blasts at the World Trade Center in 1993, Oklahoma City Federal Building in 1995 and on rush-hour London buses and trains in 2005 all contained ammonium nitrate fertilizer, which is manufactured in bulk as an explosive by the U.S. and other countries."

-- Scientific American "A Fertilizer Good for Only Growing Things, Not Destroying Them: New nonexplosive fertilizer could eliminate a deadly weapon from terrorists' arsenals."