The Brazilians were ahead of them by about 80 years.
During "The Great Depression" [tm] when coffee prices plummeted they took to
using coffee beans pressed into 'briquettes' as locomotive fuel.


http://blog.modernmechanix.com/2007/01/16/use-coffee-as-fuel-in-brazil-locomotives/

No pre-gasification - just burned directly :-).

And milk powder ! (1938, USA)(demonstration)

    http://blog.modernmechanix.com/2006/12/07/locomotive-tries-milk-fuel/






       Russell
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