Additional info from the STMFCL
1958 cuft 70-ton covered hopper
the Prototype Cyclopedia on these cars indicates they also carried soda ash, potash, phosphates, borax, sand, quartz/silica (for glass making), alumina, sodium bicarbonate and zinc oxide.?
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Ted Larson
trainweb.org/mhrr/??????? --------??????? NASG.org??????? --------???????
GN in 1965
Ted Larson