Cliffs Shaft Mine Museum was created in 1880.
I would think that "CC" stands for "Cleveland Cliffs", which is a mining company up here. There is a Cliffs Shaft Mine Museum located in Ishpeming, MI. There is also a Michigan Iron Industry Museum located in Negaunee, MI. This is also part of Cleveland Cliffs. Maybe that's what you're looking for (?) Or did the questioner want a Classic Car museum, since the question was posted under the American Cars topic?
A horizontal mine shaft is called an adit. en.wikipedia.org/wiki/Adit
it is in the mine thing
The mine shaft was over 500 feet deep. The shaft of the wagon was broken.
If you drop a grand piano down a mine shaft you would get a flat minor.
a thing
90m
a shaft mine
Strip mine Open-pit mine Shaft mine
Intake
Intake
Adit