South Wales

Unnamed
Unnamed
Unnamed
Unnamed
Sun Vein
Unnamed
Unnamed
Unnamed
Rosser Ironstone
Unnamed
Bottom Vein Ironstone
Little Blue Ironstone
Garw Vein
Big Vein Ironstone
Spotted Vein Ironstone
Bottom Vein Ironstone
Garw Rider
Garw Rider Ironstone
Garw No 2 Ironstone
Garw No 1 Ironstone
Old Coal Balls Ironstone
Unnamed
Gellideg Fireclay
Gellideg Ironstone
Five Foot Gellideg
Gellideg
Upper Gellideg Stinking
Jackmine Ironstone
Upper Gellideg Fireclay
Upper Gellideg
Five Foot Fireclay
Five Foot
Lower Seven Foot Ironstone
Lower Seven Foot Bottom Leaf
Lower Nine Foot (Top Leaf)
Spotted Pins Ironstone
Spotted Pins
Upper Seven Foot Pin Mine
Seven Foot
Seven Foot Rider
Penmark Balls Ironstone
Yard
Lower Darren Ironstone
Yard (Meadow)
Upper Darren Ironstone
Unnamed
Bute
Middle Bute Leaf
Meadow Vein Ironstone
Meadow Vein Mine
Lower Nine Foot and Bute
No 3 Clay
No 5 Clay
No 6 Clay
Lower Nine Foot
Drap Rider
Lower Nine Foot Top Leaf
Lower Nine Foot Bottom Leaf
Middle Nine Foot Top Leaf
Bottom Nine Foot
Upper Nine Foot
Unnamed
Unnamed
Red Vein
Black Pins Ironstone
Caerau
Lower Six Foot Clay
Lower Six Foot Ironstone
Six Foot Bottom Leaf
Six Foot Top Leaf
Harnlo Rider
Six Foot
Three Quarter Balls
Upper Six Foot Top Leaf
Upper Six Foot Rider
Yard Seam
Lower Four Foot
Upper Four Foot
Big Vein (Upper)
Four Foot
Black Pins Ironstone
Two Foot Nine Bottom Leaf
Two Foot Nine
Two Foot Nine Mid Leaf
Two Foot Nine Top Leaf
Two Foot Nine Rider
Unnamed
Unnamed
Unnamed
Unnamed
Unnamed
Unnamed
Unnamed
Unnamed
Black Pins Ironstone
Unnamed
Cefn Coed Ironstone
Black Mine Balls
Unnamed
Gorllwyn Fireclay
Gorllwyn
Gorllwyn Rider
Soap Vein Clay
Unnamed
Lower Pentre Black Pins
Pentre Fireclay
Lower Pentre
Lower Black Bank
Pentre Rider
Unnamed
Unnamed
Unnamed
Abergorchi
Unnamed
Unnamed
Unnamed
Unnamed
Hafod
Unnamed
Upper Cwmgors Clay
Unnamed
Pinchin Soap Vein
Upper Pinchin
Lower Pinchin
Unnamed
Unnamed
Unnamed
Tormyndd
Unnamed
Tormynned Rider No 2
Unnamed
No 3 Rhondda
Unnamed
Clement
Wernpistyll
Upper Pinchin
Unnamed
Unnamed
Soap Vein Ironstone
Unnmaed
Pantrhydydwr Rider No 2
Unnamed
Top No 2 Rhondda
Bottom No 2 Rhondda
No 2 Rhondda
No 2 Rhondda Rider Top Leaf
No 2 Rhondda Rider Bottom Leaf
No 2 Rhondda Rider
No 2 Rhondda Rider No 2
Daren Rhestyn
Unnamed
Big Rock
Upper Llwydcoed
No 1 Rhondda
Tillery Vein
Little Rock
Tillery Brithdir
Penlan
Penlan Clay
Unnamed
Unnamed
Tillery Rider No 1
Unnamed
Unnamed
Tillery Rider No 2
Brithdir Rider
Unnamed
Unnamed
Brithdir Rider Group
Glyngwillyn Rider
Glyngwillyn Cefnglas
Glyngwillyn Rider 2
Glyngwillyn Rider
Unnamed
Unnamed
Unnamed
Unnamed
Hughes
Hughes Rider
Hughes Rider Garlant
Unnamed
Cille No 2a
Unnamed
Cille No 2
Darren Ddu
Cille No 1
Westernmoor
Unnamed
Swansea Three Foot
Swansea No 3
Unnamed
Unnamed
Swansea Six Foot Bottom Leaf
Swansea Six Foot Top Leaf
Swansea Six Foot
Little Vein
Little Seam
Four Feet
Unnamed
Swansea Four Feet Bottom Leaf
Swansea Four Feet
Mynyddislwyn Lower Leaf
Mynyddislwyn Big Rider
Mynyddislwyn
Mynyddislwyn Top Leaf
Unnamed
Unnamed
Unnamed
Unnamed
Mynyddislwyn Big Rider
Unnamed
Unnamed
Unnamed
Unnamed
Groesend Middle
Mynyddislwyn Big Rider No 1
Mynyddislwyn Big Rider No 2
Hematite
Unnamed 1
Unnamed 2
Unnamed 3
Unnamed 4
Unnamed 5
Unnamed 6
Unnamed 7
Unnamed 8
Unnamed 9

Other seam names
but not in order

Rhas Las
Upper Nine
Big Vein Pumpquart
No 10
6 Feet Bute
Old Coal
Three Quarter
Wennalt
Wenallt Rider
Glyngwilwyn
Tir Edmund
Werndda Rider
Upper Llwyncoed
Yorkley
Ddugaled
Gras
Hughes
Lower 4 Feet
Lower Black Vein
Big Rock Vein
Upper Black Vein
Big Old Coal
Jonah
Ynysadwen 2,3 and 4
Brass Vein
Upper Triquart
Upper 4 Foot Rider
Abergorki
Fiery
Golden
Waterloo Red Ash
Five Thirty Yards
Five Twenty Yards
Five Seventy Yards
Low Bank
Binea
Copper 2 Feet
Crown Cwmmawr
Dylass 4 Feet
Gadleys 9 Feet
Hills Plymouth
Seven Sisters Big Vein

(South Wales Upper Coal measures)

No coals

(South Wales Middle Coal measures)

No7 seam or (Chislet No5)
No8 seam
No9 seam
No10 seam
No11 seam

(South Wales Lower Coal measures)

No12 seam
No13 seam
No14 seam