On 30 Dec 2010 02:57:46 GMT, "DoN. Nichols"
wrote:


I remember white cubes which were provided as the fuel for a
kid's model steam engine. I never knew what they were, and no longer
have the steam engine, so it does not matter -- but could something like
semetex have actually been provided with a toy back in the early 1950s?

Probably hexamine. High nitrogen content, lots of heat, burns clean,
no ashes. Still used for fuel tablets, check ebay.

http://en.wikipedia.org/wiki/Hexamine

Best -- Terry