How Long to Load/Unload a Tank Car?

Jim Betz

  One of Claus's pictures was of a cut of tank cars being
loaded (unloaded?)  that were blue flagged.  I've always
understood the meaning of those flaggings ... but I've
never known/learned "how long did it take to load/unload
a 10k tank car?".
  I notice, for instance, that in the picture that Claus posted
the link to there are no "workers" in the pic (at least none
that I noticed/picked out).  Presumably the loading process
took considerable time.  And had an automatic "shut off"?
- Jim B.

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