Scott,

The Bob's photo I mentioned was taken in Ottawa IL, famous for it's silica sand pits.  I have been told by an ex-Monon employee these were in glass service for a Chrysler windshield plant in Indianapolis.  I have not been able to find out much about this, however.   Does anyone know about this factory?

In the Monon conductor's reports I have they carry mostly cement, and I think that is why they were purchased.  The Monon served a large cement plant south of Greencastle IN.  (at a station name called "Cement" !)  The cars also carried soda ash and lime.  It is not recorded in these reports, but I have heard they also carried 'limestone dust'; a waste product from stone cutting mills that is used in the cosmetics industry.

Regards,

Mike Aufderheide