The fell has seen extensive mining history. Dale Head Mine was driven below the northern crags for copper, several levels still being visible. Long Work was another copper mine a little further down the valley, worked for malachite and pyrite from Elizabethan times. On the southern flank of the fell, centred on the head of the pass, are the Honister Quarries. These are an extensive system of underground quarries, worked for Green Slate. The earliest extant records date from 1728 and since then huge caverns have been carved out on either side of the pass. The Yew Crag workings on the Dale Head side were operated until 1966, operations on the slopes of Grey Knotts continuing. In 1887 work began to drive a tunnel right under Dale Head into Newlands Valley, connecting with a proposed tramway to join the railway at Keswick. The scheme was abandoned after opposition from landowners. The main workers accommodation at the mine is now the Honister Hause Youth Hostel.