BN CB&Q GN NP hopper question

[mplsjct]

I model the early BN, and I have found a few photos similar to this, showing an open hopper train with a mix of cars, some are easily identified, a CB&Q quad, a BN 3 bay, etc., the cars I can't identify are the brown or red cars (3rd car back in the photo), they appear to have the same height as the other 3 bay cars, but I am not familiar with any BN predecessor cars that would've been painted red or brown, the only ones that come close are GN 70000-70299 series, but these cars would be shorter, closer to the height of the CB&Q quad car.

Anyone have any ideas?

http://magichammer.rrpicturearchives.net/showPicture.aspx?id=620188

[Robbman]

I don't know the specifics,  but BN did get at least one series of former MKT hoppers, Greenville 3600 triples.  These were originally red.

[mplsjct]

Well, that makes sense, it stands to reason the BN would've needed these in the early days with the coal traffic boom.

http://www.rrpicturearchives.net/showPicture.aspx?id=69281

The above car appears to have the height, do you know if this is a Greenville car?

[Robbman]

These are the ones:

[mplsjct]

The photo is dated 1978, so I guess it's possible.

Thanks for your help.

[nkalanaga]

522400    522699    45-2'    3-bay/Greenville    17-rib    Hopper    MKT    10600-10899
http://www.fobnr.org/bncarlist/bncarlist5.htm