PLAN AND REPORT: Dyffryn Adda project (Parys and Mona Mines), Mynydd Parys Dam Removal Project Completion report.
Treatment works completed 11 August 2003.
MRO/HSE ref. no. 17902.
One volume with sections entitled: project background; the works; outstanding issues; recommendations; figures; and photographs.
Also includes plan of south side drainage leate and shaft top levels.