Fantastic! Thank you for the super fast response and the map! I have a feeling that Bartle Hill colliery and Barclay Hills colliery were the same. I have two postcards that are both written on the backs by the same person, and on closer inspection, some of the men in the photos appear to be the same, even though the cards are identified on the front with the respective colliery. The postcards are circa 1905.
Cheers, Kris