Dinnington Main Coal Co
of Sheepbridge Works, Chesterfield
1900 The company was registered on 1 November, and owns leasehold and freehold properties of about 5,000 acres in extent situated in Barnsley. [1]
1927 Yorkshire Amalgamated Collieries was formed to acquire and hold the shares of the Dinnington Main Coal Co and a number of other companies[2]