Milling

Watermills
The harnessing of water was the most popular source of power for centuries, with corn mills being recorded from medieval times.

Working corn mills survive at St Dogmaels and Hescwm Mill, Dinas. Rural mills are widespread, with good small examples found at Llanrhian and Camrose, and larger ones at Nantycoy Mill near Wolfscastle and Middle Mill near Solva. One of the largest mills in the County is the four-storey mill found at Blackpool near Canaston Bridge.

There were two large tidal mills at Carew and Pembroke, the latter was built around 1820, but was demolished during the 20th Century. The Carew tidal mill is one of the last working examples in Britain. The three-storey building, rebuilt in the mid-19th Century, stands on a masonry-faced clay dam to a 27 acre reservoir. The vaulted basement arches through the dam contain the two undershot wheels, driving six pairs of stones.

Woollen Mills were first found in Pembrokeshire in the middle of the 17th Century, with the earliest recorded mill located at Glandwr. The old corn mill at Tregwynt in the North West was converted to a woollen mill and is still operating today. The ruins of brick buildings at Prendergast Mill, near Ridgeway Service Station, are of a cotton mill which was built around 1786. It was converted into a paper mill in 1816 by Benjamin Harvey, who set up the Russian imperial paper mills.

Windmills
The use of wind as a source of power was mainly found in the South of the county, although very few remain today. The towers at Dale and at Angle are of windmills that were built in the 18th Century. Another surviving windmill is found built into the early 20th Century house of Twr y Felin in St. David's.