A small structure built after 1877, situated between the Hydraulic Pump House (NPRN:405091) and the Pellet Press House (NPRN:405095). The Nobel Plan (No.71 on the Nobel Plan) describes it as a magazine but Moses annotates it a hydraulic accumulator, i.e. a pressurised reservoir for the hydraulic presses in the pellet press house. No trace found.

References:
Nobel Industries Ltd. (1927) Block Plan of Glyn Neath Black Powder Factory. NMRW
Moses, T.L. Annotated copy of OS 1/2500 (1918). NMRW

D.J.Percival, 18 October 2006