Mineral resources near the top end of the canal included ironstone, which was normally extracted by scouring. This caused problems for the canal, as silt was deposited in the feeders and the top pounds. The Fox family, who were based at Neath Abbey, but who were scouring ironstone further up the valley, agreed to construct a new feeder in 1807 to mitigate the problem. Protests made to the Tappendens, who were scouring at Pen-rhiw and Cwm Gwrelych, were less successful. As the pounds were silting up, the company took legal action in 1811. The court found in their favour, recognising that the canal would soon be useless unless something was done.