1. Around the remains of lock 13 are a variety of interesting features. An early l9th century lime-kiln is built into the lock platform [SN 8588 0517] and just downstream from the lock, at the Maes Gwyn overbridge [SN 8581 0512] are the remains of a pleasure boathouse built for the owners of the now demolished Maes Gwyn House. The foundations of a mill and a millstone also survive in the outbuildings of the mansion [SN 8579 0510]. It was driven by by-pass water from the lock.
(Site entry from "A Guide to the Industrial Archaeology of the Swansea Region", Association for Industrial Archaeology, 2nd Edition, 1989)
J Hill 28.10.2003

2. The mill was fed from a secondary diversion of the by-pass of lock 13. The actual mill was situated in a back wing of Mes-gwyn House. Most of this wing has been demolished down to foundation level and the stones dumped in the pleasure-boat house.

S.R.Hughes 27 January 1976