Re: Intermountain's NKP Alt Std Hoppers


I'm curious about the re-building of "some" of the 33xxx cars to have flat-top ends.  How many of these cars had this conversion--a few, or all, or almost all, or "half"?  And was this all done right around 1959, or was it something that happened when the round-topped cars needed extensive rebuilding over a long time span?


Edward Sutorik  

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