Little evidence remains of the mining shafts that once surrounded the northern perimeter of the monastery or those to the west, near Mwdwl-eithin Farm, in the fields south of Carmel. However, larger shaft mounds can still be identified to the north of the monastery grounds, including at grid references SJ 1611 7617, SJ 1625 7615, and SJ 1622 7625, situated to the south of the road as it turns towards Carmel. These shafts are associated with the Hopewell and Lord Hill setts. To the west of the monastery, additional shaft mounds can be found on the St David and Prince David setts at SJ 1634 7596 and SJ 1628 7594.

Several small mining companies worked around the grounds of St David’s Monastery and St Clare’s Convent, collectively known as Pantasaph. The Milwr Vein, which cuts across the northern edge of the monastery grounds, was worked by the St David’s Mining Company from 1874 to 1882. To the north of these workings, the Lord Hill Mining Company operated in 1853, while the Hopewell Mining Company worked from 1855 to 1865. Later, the Prince David Company made returns from 1891 to 1903, focusing on the south-western area of the monastery.