in october of NUMBER_TOKEN union pacific built a frankenstein-like detail using an old cab purchased from the great north railway and a tweaked gas turbine from a first generation locomotive featuring two units NUMBER_TOKEN powered axles and a NUMBER_TOKEN NUMBER_TOKEN horsepower auxiliary diesel engine the experimental unit cranked out a respectable NUMBER_TOKEN horsepower bus injecting coal dust into the combustion chamber of a gas turbine wasn't without problems despite what energy executives say these days coal isn't particularly clean and it was even dirtier more than half a century ago when engines were much less efficient in fact the blade erosion and soot emission problems so common with bunker sea fuel were amplified to the point that the increased maintenance costs more than negated the savings from using the cheap coal as energy ultimately after spending less than two years in service the old hybrid locomotive was laid to rest and later cannibalized to spare parts
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