There is a long history of mining in the Durrus/Mizen area. There is a reference c 1310 by Edmund Gould in the British History online papers to a lead mine in Belamire which is probably near Sea Lodge (Townland Gearhameen), Durrus.
The historic Ordnance Survey map c 1830 shows a Lead Mine in the vicinity of Clonee to the south of the present Bog Road from Durrus to Bantry.
This is from the local newspaper later known as ‘The Skibbereen Eagle’ notorious for ‘Keeping an eye on the Czar’ and later incorporated into the ‘Southern Star’.
Slate Quarries Drimoleague, Sea Lodge Kilcrohane Skibbereen Eagle 1865
Dreenlomane Barytes Mines, Dunbeacon, Mizen Peninsula closed 1920.
https://durrushistory.wordpress.com/2011/10/08/baryte-mines/
West Cork History 
Thanks for the history of this part of Ireland, I knew the Collins family that had a slate Quarrie on their land, if my memory is correct it was located in the town land of Inchingerig. I was not a working quarrie by 1950s.
Peter O’Driscoll from Aughaville born December 1942.
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Pingback: Overview of mining in West Cork, commencement of copper mining, Allihies 1813, Ballycumisk and Horse Island 1814, Balllydehob 1820, Cappagh 1820, Gortavallig Kilrohane pre 1854 and 1890, Barytes Bantry, Scart, Derryinagh, Dereenlomane, Mount Gabriel, Dunb
Reblogged this on West Cork History.
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Pingback: Lease Between Richard O’Donovan, Magistrate, of Glanlough, Cork Esq. and Francis Lisabe of Ballyshannon, Co. Donegal, Civil Engineer, of a slate and a flag quarry, and 2 acres of land near the slate quarry in Gouladoo in the parish of Kilcrohane, We
Pingback: Lease Between Richard O’Donovan, Magistrate, of Glanlough, Cork Esq. and Francis Lisabe of Ballyshannon, Co. Donegal, Civil Engineer, of a slate and a flag quarry, and 2 acres of land near the slate quarry in Gouladoo in the parish of Kilcrohane, We
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Pingback: Lease Between Richard O’Donovan, Magistrate, of Glanlough, Cork Esq. and Between Richard ODonovan, Magistrate, of Glanlough, Cork Esq. and Francis Lisabe of Ballyshannon, Co. Donegal, Civil Engineer, of a slate and a flag quarry, and 5 acres of land
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