JMHX 316-325
JHMX 316-325 (to JMHX 41316-41325 in 1969)
These cars were built by Thrall in 10/1959 & 3/1960 and featured 3524 ft3 capacity. At some point, they were enlarged to 3950 ft3 probably in the late 1960's when they were renumbered into the JMHX 39xxx series.