Andrew Barss wrote in news:ehg8ig$6hl$1
@onion.ccit.arizona.edu:

2) Grinding both aluminum and steel on the same
grinding wheel can create thermite. This can cause the wheel to
explode. Lee Valley is a good contact for this - -they had an
article on their website about a specific occurrence.


I was told that this reaction was used to repair/fuse tracks for electric
trolleys (Dutch word is "tram", it is similar to the "light rail" system in
for instance Hoboken, NJ and surrounding).

Another explanation of the reaction between rust and aluminium (with either
1 or 2 "i"s) is he
http://www.ilpi.com/genchem/demo/thermite/index.html

--
Best regards
Han
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