Some Captured History of Glanamman and Garnant

Coal Seams at Cwmamman

Metric figures are approximate conversions from the original Imperial measurements.

Name of
Coal Seam
Approximate Thickness
of Coal Seam
 
Metric
Imperial
Metric
Imperial
Red Vein
1.07m
3 ft 6 in


Approximate distance between coal seams:

 


70m

 


76 yds

 
Coal
0.30m
1 ft 0 in
Approx Depth from Red Vein:
70m
76 yds


Approximate distance between coal seams:

 


81m

 


88 yds

 
Coal
0.38m
1 ft 3 in
Approx Depth from Red Vein:
150m
164 yds


Approximate distance between coal seams

:


38m

 


42 yds

 
Soap Vein
0.51m
1 ft 8 in
Approx Depth from Red Vein:
188m
206 yds


Approximate distance between coal seams:

 


24m

 


26 yds

 
Stwrin Vein
0.56m
1 ft 10 in
Approx Depth from Red Vein:
212m
232 yds


Approximate distance between coal seams:

 


7m

 


8 yds

 
White Vein
0.76m
2 ft 6 in
Approx Depth from Red Vein:
220m
240 yds


Approximate distance between coal seams:

 


25m

 


27 yds

 
Black Vein
0.91m
3 ft 0 in
Approx Depth from Red Vein:
244m
267 yds


Approximate distance between coal seams:

 


21m

 


23 yds

 
Litte Vein or Pencraig Vein*
0.76m
2 ft 6 in
Approx Depth from Red Vein:
265m
290 yds


Approximate distance between coal seams:

 


16m

 


18 yds

 
Harnlo Vein or Lower Pencraig Vein
0.38m
1 ft 3 in
Approx Depth from Red Vein:
282m
308 yds


Approximate distance between coal seams:

 


20m

 


22 yds

 
Big Vein or Stanllyd Vein
1.37m
4 ft 6 in
Approx Depth from Red Vein:
302m
330 yds


Approximate distance between coal seams:

 


7m

 


8 yds

 
Black Vein
0.76m
2 ft 6 in
Approx Depth from Red Vein:
309m
338 yds


Approximate distance between coal seams:

 


22m

 


24 yds

 
Brass Vein or Lower Black Vein
0.99m
3 ft 3 in
Approx Depth from Red Vein:
331m
362 yds


Approximate distance between coal seams:

 


16m

 


17 yds

 
Trigloin Vein or Peacock Vein
1.22m
4 ft 0 in
Approx Depth from Red Vein:
347m
379 yds


Approximate distance between coal seams:

 


27m

 


29 yds

 
Brynlloi Vein
0.81m
2 ft 8 in
Approx Depth from Red Vein:
373m
408 yds


Approximate distance between coal seams:

 


40m

 


44 yds

 
Little Brass Vein or Stinking Vein
0.46m
1 ft 6 in
Approx Depth from Red Vein:
413m
452 yds


Approximate distance between coal seams:

 


9m

 


9½ yds

 
Middle Vein
0.81m
2 ft 8 in
Approx Depth from Red Vein:
422m
461 yds


Approximate distance between coal seams:

 


9m

 


10 yds

 
Lower Vein
0.91m
3 ft 0 in
Approx Depth from Red Vein:
431m
471 yds


Approximate distance between coal seams:

 


58m

 


53yds

 
Bryn Vein
0.69m
2ft 3 in
Approx Depth from Red Vein:
489m
524 yds


Approximate distance between coal seams:

 


?

 


?

 
Astell Vein
?
?
Approx Depth from Red Vein:
?
?

* The Little Vein may have also been known as the "Lower Pencraig" at Garnant.

Information for this page was taken from a variety of informal sources and is specific to the part of Cwmamman where the Red Vein is the coal seam nearest to the surface.