The Cliffs Shaft Mine Museum page at Pure Michigan says that the Ishpeming museum is open June – September Tuesdays through Saturdays from 10 am to 4 pm:
Walk back in history to see local historical artifacts representing the local community during the great mining era. View historical displays of miners and mines past and present, headgear & other safety equipment available to miners of yesteryear, and displays on blasting and diamond drilling equipment. Stop in the Ishpeming Rock and Mineral Club’s room and view over 500 minerals from the local area, the Upper Peninsula, Midwest and the world.
Take a guided tour of the tunnels that the miners walked to the base of the C-Shaft and listen to the history of mining from those who worked the mines. Follow up the stairs past old underground iron ore cars with a stop at the blacksmith shop. Go outside to view towers 97’ to 174’ high which were used to lower miners 1250’ into the bowels of the earth. Stand beside a 170-ton Iron Ore Truck with tires 12 feet high.
Don’t forget your camera so you can have a memento of your visit standing inside the 30 ton shovel bucket in front of the Dry building or in front of the 170-ton Iron Ore truck. End your tour in the gift shop to pick up memorabilia of your visit. The museum open with a nominal admission.
Sounds pretty cool to me! Follow the museum on Facebook for the latest (and some old photos).