One correction on your caption Todd. The 7222 (i.e EMCO 602, EMCO 352) was actually assigned to mine duties at the EMCO / LTVSMC plantsite for it's entire career. It was the only one of the three C420's that did not see duty on the mainline. The other two (EMCO 7220 & 7221) did a stint in road service and were renumbered for that to the 4218 & 4219. Once they returned to mine service they again assumed their 7200-series numbers, but the 7222 kept it's number and was assigned to the mine hauls for it's entire time at EMCO / LTVSMC.
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