Henry Gruver once mentioned white dust killing ppl at travalgar square during a terror attack. The London Telegraph very recently did a 'hit'-piece on an terror attack on London. Today I dug up this BBC Horizon dirty-bomb documentary. Identifying the white dust as mentioned by Henry Gruver in the 90s.

Does life imitate art here, or is it the other way around ?
You be the judge http://www.spikedhumor.com/articles/121355/Dirty-Bomb-BBC-Horizon-2-3.html