Grassed over shafts and mounds.
The sett was initially worked in the early 18th century by the Quaker Company along an east-to-west vein situated south of the Llwyn-y-cosyn Vein.
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Silver Rake - 282m
Llwyn y Cosyn - 365m
Pwll y Gaseg - 424m
Nant y Fuwch - 719m
Cross Leavings - 726m
Pwllwheal - 761m
Llwyn Erddyn - 767m
Pant y Pydew Engine Shaft - 772m
Maenbras - 780m
Bryn Mawr Quarry - 784m
Pant y Pydew - 790m
Pen yr Henblas - 804m
Gelli Folwer - 848m
Plas Captain - 1,008m
Pwllclai - 1,076m
Pen yr Hwylfa - 1,088m
Halkyn Marble Quarry - 1,091m
Berthen Farm - 1,105m
Prince Patrick - 1,129m
Prince Patrick North - 1,138m
Chwarel Wen - 1,234m
Pwll Melyn - 1,281m
Parry's Vein - 1,352m
Grosvenor - 1,359m
North Henblas Shaft - 1,375m
Caeau - 1,492m
Cheney Rake - 1,498m
Brynyrhenblas - 1,531m
Tyddyn Shepherd - 1,568m
Hwylfa Shaft - 1,605m
Calcot Hall - 1,641m
Lixwm - 1,662m
Billins - 1,672m
Brynford - 1,697m
Cornell Llwyd - 1,699m
Pant y Pwll Dwr - 1,726m
Long Rake - 1,749m
Tyddyn Shepherd - 1,777m
Pen y Pylle - 1,800m
Herward - 1,833m
Prysau - 1,905m
Chwarel Las - 1,907m
Union - 1,939m