This is one of two electric face shovels seen at Iron Knob and surrounding area. It is a product of the Marion Power Shovel Company, Ohio, and may have worked at the Iron Baron ore mine. Earlier models shovels were first introduced at these mines in 1928 and at one time there were three or four Bucyrus-Erie 120B electric shovels in operation. The other survivor is on top of the spoil tip at Iron Monarch mine.

The information panel for this excavator states: "No. 7 Marion all electric shovel commissioned June 1965, cost $38,000. Taken out of service 14 October 1981 after digging more than 24 million tons. Carried own cable of 3300 V. With bucket of 18 tons cap."