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Eaglebrook Mine (Nant-Y-Cagel Mine; Nantycagl Mine; Nantygagal Mine; Dolrhyddlan Mine), Nant-y-Moch Reservoir area, Talybont, Ceulanymaesmawr, Ceredigion (Dyfed; Cardiganshire), Wales, UK
Eaglebrook mine has been known for many years as a site that has produced many fine micros, of mostly basic sulphates of lead, copper, and zinc.
Please bear in mind that the site is SSSI (a site once brought to prominence by amateur collectors is now off limits to those that helped the professional institutions).
The mine is quite old, worked by the Company of Mine Adventures sometime around 1700, and continued to be developed until 1722. In 1853 the mine was reopened, but it seems to have been more to sell shares, than to work the mine. However, work did continue until 1865.
There were other short trials until final closure in 1874-5. The mine was developed to a depth of 50 fathoms at the east shaft.
Output is only recorded for the years after 1853, with most ore produced between 1856-59. Recorded output is 598 tons of lead ore and 71 tons of copper ore.
Mineral List
59 entries listed. 56 valid minerals.
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