23 October 1877  Thomas Lewis applying for a gale of coal in the Yorkley, or Yard Delf vein situate near Coopers Mill Pool at Lydbrook.
Yorkley Coal in the rise of Miery Stock Colliery.

20 December 1877  Granted.

25 September 1879  Notice to surrender.

7 April 1885  Re-grant to G.A. Morgan, Lane End, Coleford.  Granted 22 June 1885.

24 July 1889  Forfeited.