A watch house (No.36 on the Nobel Plan) where men working in hazardous areas changed into special clothing and slippers provided. Built by 1877, the building was approached along a walled pathway. The structure is now ruinous; the masonry walls still standing to about 1.5m high.

Reference:
Nobel Industries Ltd. (1927) Block Plan of Glyn Neath Black Powder Factory. NMRW

D.J.Percival, 18 October 2006