The Pwllmelyn Mine operated along the N-S Caleb Bell cross-course, which ran in a north-south direction. Today, only the remains of shafts and spoil heaps can be found near Pwllmelyn Cottage and Bryn Teg (SJ 1835 1470).
Shafts at SJ 1837 7198, SJ 1836 7184, SJ 1838 7153, SJ 1843 7153, SJ 1841 7142, SJ 1839 7116, and SJ 1842 7114.