John Lancaster and Co
of Blaina, Monmouth
1884 The company was registered on 15 February, to take over the business of the firm of the same name, colliery proprietors. 
1947 At nationalisation just over 1,500 men were employed.
Sources of Information
- The Stock Exchange Year Book 1908
- The Times, 21 June 1916
- Papers in Gwent Record Office