Courtesy De La Salle Publication, Skibbereen

Drinagh:

https://www.google.ie/maps/place/Drinagh,+Co.+Cork/@51.6365015,-9.1251297,12z/data=!4m2!3m1!1s0x4845aa1a8b511ff3:0x2600c7a819bb5a12

From this newspaper ad it may hve been operational since 1830s.

1935

1935

1934

Madranna:

https://www.google.ie/maps/place/Madranna,+Co.+Cork/@51.6015377,-9.1139979,13z/data=!4m2!3m1!1s0x4845ab97c911cc71:0x2600c7a7bab4fc62

https://durrushistory.wordpress.com/2014/06/10/19th-century-mines-and-quarries-rossmore-and-friendly-cove-slate-quarries-durrus-copper-clonee-scart-bantry-barytes-rooska-and-killoveenogue-silver-and-lead-mine-west-cork/

https://durrushistory.wordpress.com/2014/06/18/geological-relations-in-the-south-of-ireland-by-thomas-weaver-including-west-cork-mines-1835/

https://durrushistory.wordpress.com/2014/06/09/slate-quarries-drimoleague-sea-lodge-durrus-kilcrohane-west-cork-skibbereen-and-west-carbery-eagle-or-south-western-advertiser-18656-and-lead-mine-1310-belamire-durrus/