Hi,
I sail at Sandwell Valley Sailing Club, our club house is old pit head baths for Jubilee colliery, their are other above ground remains, including a flight of 20 foot wide stone stairs and a round brick feature approx' 30 foot diameter, believed to be a fountain base, also you can walk along tramway, where several sections of wrought iron railings are still visible, small bridges etc, our boat park fence is made from wrought iron railings which originally lined tramway.
Mine shaft is still supposed to be accessible but at nearly 2,000 feet deep, you would need specialist equipment to go down.