I don't know about the US, but they used some 2 foot gauge O&K mallets in Mexico for mining operations. Jim Birmingham has one running on the Cripple Creek and Victor Railroad in Cripple Creek, Colorado. A listing of them can be found in the book Articulated Locomotives of North America.<br>Roger Mitchell<br>Master Mechanic<br>Fort Collins Municipal Railway<br>Fort Collins, Colorado<br>



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