I am modeling the former PRR Monongahela branch during the 1968-69 era. I know there was a lot of coal transported on the PC, which brings me to my questions:
1) Were 55 ton hoppers still used much during this period?
2) If they were still used, what would be an estimate of the ratio of 55 ton to 70 ton to 100 ton?
2) Were the 55 ton and the 70 and 100 ton cars mixed in consists during this period?
Modeling 1969 Pittsburgh in 1999 Houston, TX