I am researching and writing Jottings of the History of Pembrokeshire generally but as Pembrokeshire was once an industrial area exporting large quantities of coal and records of mining go back to 1331. The sites of most of the mines has been lost as they were only small probably worked by a family as part of there small holding, all that remains are circles or depressions marked by greener grass. the miners houses were clum and they have all disappeared but when a new cutting was made for a road then the vein's about 2ft thick could be seen. Most mining finished by the 1850's and before that time, reports of accidents are scanty, coroners inquests give a little information, but the major landowners of the area were not fond of publicity. Cases of a farmer renting land from a major landowner on long lease only to have a coal mine dug on the land he rented with fields covered by slag heaps. - The farmer received no compensation and died in the workhouse.
BHJH