In the 1760s-80s the internationally important Deep Ecton Copper Mine made a fortune for the Dukes of Devonshire. The first copper was mined here long before, in the Bronze Age over 3,500 years ago. The Dukes, who owned northern and western parts of the hill, had their mines worked in-house for over 50 years from 1760. From the 1820s private mining companies embarked on a fruitless search for further rich ore deposits. The mines were finally abandoned in 1889. While the 19th century ventures lost investors’ money, with them at best only finding other peoples’ leavings, they kept local miners in work for decades.
Millions of years ago cracks in the folded rock at Ecton were filled by hot metal-bearing water from great depths. As this cooled copper, lead, and zinc ores were deposited in a series of near-vertical deposits. Two of these, the ‘Deep Ecton Pipe’ and the ‘Clayton Pipe’ as short distance to the south, were very rich and went vertically in sinuous fashion from the hilltop down to great depths. There were long-standing rumours, perhaps based on only wishful thinking, that there was a third rich ‘pipe’ at Ecton. Despite much money and hard work spent in efforts to locate it, this was never found.
The most common copper ore was chalcopyrite, while those of lead and zinc were galena and blende, but in addition there are many other minerals that existed in smaller quantities.
Copper fetched a much greater price than the other metals found at Ecton and was a vital element for making bronze and brass. In prehistory copper was often combined with tin to make bronze tools and weapons. However, another intriguing possibility is that the copper ores were used as pigments, for when oxidised near surface these ores included bright green malachite and intense blue azurite. In much later times copper was used for such things as lining the bottoms of warships, producing low-value coinage and making sculpture.
There were seventeen separate mines of various sizes documented as being worked in the 1700s and 1800s at Ecton. There were well over fifty mine entry points in former times but these are now mostly collapsed or filled in; the ones that remain are gated or grilled.
In their heyday the mines employed hundreds of miners on short-term six to seven week contracts. If the mine manager did not need them they got no work and often if they found no ore they got no pay. Their life was hard, they walked to and from local villages to reach the mine and sometimes climbed down hundreds of metres on ladders to get to where the ore was being worked.
The west side of Ecton Hill has important species-rich ancient grasslands with rare orchids and other special plants. One of the more spectacular sights is the relatively rare Butterfly Orchids that are found in only one small area of the hillside.
The Geoff Cox Study Centre is used by schools from across Britain. In the 1970s Geoff, a mining engineer, founded this to inspire students to take an interest in minerals and modern mining. Visit https://ectonhillfsa.org and https://ectonmine.org.uk.
In recent years Deep Ecton Mine has been used for scientific research. This has included exploring the vast workings now flooded below the level of the Manifold River using experimental submersible robots developed by a multi-national team. Visit https://unexmin.eu and https://unexup.eu.