Vintage Cast Iron / Steel  Railroad Mining Wheel measures around 11-3/4" Wheel Dia. about 14-1/2" Dia.at the Flange This is probably from a mine I am in central PA. and there were a lot of Anthracite Coal mines in our area and at one time there were also Iron ore mines and other industries. 

The wheel has some definite wear and there are some flat spots in the worn area good for display 
 
 
[Please Look at all the pictures they are part of the description]