Overlooking Snowdon mountain, Dinorwic in its heyday employed more than 3,000 men and was the second-largest opencast slate producer in the country. Although by 1930
Author: mindat

Mostly exploited for Arsenic with a little Copper exploration thereafter, Ding Dong mine was absorbed into the Bedford United sett in the 1840s and closed

Virtuous Lady was worked from 1588 until 18071. It then reopened in the 1830s before finally closing in 1879. Rendell suggests in his book that

Richards’ shaft (S13 on the map below) had reached a depth of 28 fathoms (51 metres) by April 1846, by 1867 it was at 224fm

Situated alongside the River Tamar on the farthest edge of West Devon, Gawton was worked predominantly from 1846 as an Arsenic mine although it had