Centrifugal fans, used to ventilate coal mines. They were distinguished by their extremely large size and by the fan having an integral shroud and so being able to be mounted in the open air. They were built by the Waddle Engineering and Fan Company Limited, in Llanelli, Carmarthenshire.
Media in category "Waddle fans"
The following 3 files are in this category, out of 3 total.