Mr Guest wrote:
bof wrote (apparently) in uk.misc on Sat 02 Jun 2007 20:56:34:

In message , Huge
writes
Nickel suphide inclusions.

http://www.glassonweb.com/articles/article/330/

Makes toughened glass shatter spontaneously.

Astonishing really, a single 100um particle changes phase after
10 years and an entire window comes showering down from the 11th
floor. Beats a butterfly beating its wings in China causing storm
in Harrogate.

Thankfully I live the "other" side of Starbeck to Harrogate. No storms
here, thanks...

Aye, but that level crossing is a menace.....