Pembrokeshire Coalfield Pembrokeshire Coalfield The Pembrokeshire Coalfield in West Wales is one of the smallest British coalfields, but continuously worked from the 14th to 20th centuries. The main coalfield extends from Saundersfoot on Carmarthen Bay westwards to Broad Haven on St Brides Bay. A small detached portion of the field is centred on Newgale on St Brides Bay. The coalfield is in effect the westernmost extension of the South Wales Coalfield though it is separated from the main body of that field by Carmarthen. Coal seams within the Pembrokeshire Coalfield are traditionally referred to as veins. The following sequence is recognised in
Pembrokeshire have developed along the Milford Haven Waterway and the county has attracted other major ventures. In 2016, the Rt. Hon. Stephen Crabb, then Welsh Secretary, commented in a government press release: ""...with a buoyant local economy, Pembrokeshire is punching above its weight across the UK."" Until the 12th century, a great extent of Pembrokeshire was virgin woodland. Clearance in the lowland south began under Anglo-Flemish colonisation and under mediaeval tenancies in other areas. Such was the extent of development that by the 16th century there was a shortage of timber in the county. Little is known about mediaeval farming methods,