152
Class 1.—MINING- AND MINERAL PRODUCTS.South Side—Areas S. 1 to S. 27.
[United
SOUTH WALES.—(Northern Outcrop)— continued.
General
No. of
No.
Series
Soap Vein Coal.
Ft.
In.
35, 36
3
Upper Black Fins, Dowlais .—Three courses
= 4 inches.
37, 38
4
Lower Black Pins, Dowlais .—One course
= 3 inches.
Yard Coal . . .
3
6
Upper Four Feet Coal.
3
0
Dowlais Biq Coal . .
8
0
39, 40
5
Black Pin Soap Vein, Dowlais. — Five
courses =11 inches. About 17 yardsbeneath big coal.
Ras Las Coal . ,
7
9
41
6
Brass Vein Mine, Dowlais .—Two courses
= 3£ inches lying immediately on BrassVein Coal.
Brass Vein Coal
2
0
42, 43
7
Little Pins, Dowlais .—Eight courses = 16
inches.
Three Coals
3
0
44
8
Little Vein, Dowlais .—One course — 5
inches, lying over Little Vein Coal.
Little Vein Coal . .
3
0
45, 46
9
Biq Blue Fein, Dowlais .—Three courses =
8i inches, lying 4 feet above Lower FourFeet Coal.
Lower Four Feet Coal
9
3
47
10
Spotted Vein, Dowlais.— Three courses =
12 inches, in 8 feet ground, lying about 5yards below Lower Four Feet Coal.
48, 49
11
Red Vein, Dowlais .—Four courses = 11-£
inches in 8 feet ground, about 5 yardsunderneath Spotted Vein.
50, 51
12
Little Blue Vein, Dowlais .—Six courses —
14 inches in about 12 feet ground.
52, 53
13
Jenkin Pins, Dowlais .—Eight courses = 12
inches in about 10 feet ground.
54, 55
14
Lumpy Vein, Dowlais— Three courses =
64 inches in about 6 feet ground, workedwith Lumpy Vein Coal.
Lumpy Vein Coal
1
3
56
15
Top Rosser Mine, Dowlais .—One course =
5 inches.
57
16
Bottom Rosser Mine, Dowlais. — Three
courses = 8 inches in about 5feet ground.
Total average thickness of measures from GwridMine to Bottom Rosser Mine about 320 yards. In thelast 100 yards of this, there are five workable beds ofcoal varying from 2 feet to 9 feet thick: and 62 dis-tinct courses of ironstone varying from 1 to 5 inchesthick, many of which, however, are necessarily not work-able.
General ' No. of
Blast
No.
Series.
—
Furnaces.
Principal Works
In
Out
Cwm Avon . . .
4
2
Oakwood ....Garth ....
2
3
Maesteg . . .
3
Llynvi ....
Neath Abbey
4
2
20 Furnaces . . ,
10
10
Strata .
Ft.
In.
58
1
TTnner Blackband , Llynvi.—One course = 20
inches; worked at Llynvi, Maesteg, andCwm Avon.
Albert Seam .
1
8
Victoria Seam .
3
0
59
2
Lower Blackband, Llynvi. —One course = 12
inches. These beds, about 22 yards apart,
are perhaps, for extent of area and generalquality, the most important Blackbandsvet discovered in the South Wales Coal-field, although not nearly equal in
Genera
No. o)
No.
Series
Ft.
In.
thickness to the Blackband in the parishof Gellygaer, in the central part of this
coal-field.
Yard Vein . . ,
3
O
Two and a Half Feet Vein .
2
6
Two Feet Vein .
2
O
Cae David Vein • .
4
*3
60 to 62
3
Cockshut or Scwd Mine, Llynvi.
63, 64
4
Fire Clay Vein, Llynvi.
Fire Clay Vein . •
I
4
65 to 67
5
Yellow Vein, Llynvi These three courses
68
6
Pin Balsoq, Llynvi of mine lie in about
69, 70
7
Black Pin, Llynvi . J 24 feet of ground,
and are worked together in the patchesor open works of this district.
Upper Six Feet Coal .
6
0
71,72,73
8
Double Pin, Llynvi.
Truro Coal . . .
3
0
Lower Six Feet Coal .
6
0
74
9
Biq Vein, Llynvi 1 These three courses
10
Pin Ha/kin, Llynvi > lie in about 38 feet
76
11
Furnace Mine, Llynvi | of ground, and areworked together in the same way as Nos.
5, 6, and 7, in patches or open works.
Furnace Vein Coal
3
0
Seven Feet Coal . .
7
0
77
12
Coal and Mine Seam, Llynvi.
Coal and Mine Vein . •
2
3
Cwm Avon Series.
Wernddu Seam .
2
0
Wern Pistyll Seam \ .
1
9
Tor Mynydd Seam . .
2
2
White Seam ...
4
n
Jonah Seam . . .
1
2
78
1
Blackband, Cwm Avon .—Thickness varies
very much, at Cwm Avon about 7 inches,Oakwood 22 inches.
Cwm Bir Seam . .
1
8
Black Seam . ,
1
6
Golden Seam .
2
2
Cockshut Seam .
1
6
79
2
Btq Mine, Cwm Avon .—Lies under Upper
Cockshut Rock ; one course of 12 inches.
80
3
Middle Biq Mine, Cwm Avon .—Lies be-
tween two Cockshut rocks; one courseof 6 inches.
81
4
Lower Biq Mine, Cwm Avon .—One course
of 4 inches ; sometimes worked withNew Mine coal, about 2 feet under it.
New Mine Vein
2
Balling Seam . •
2
2
82, 83
5
Balling Mine, Cwm Avon .—Two courses.
Finery Seam . . .
2
0
84 to 86
6
Sulphury Mine, Cwm Avon .—Three courses
= 7 inches.
Sulphury Seam . . ,
2
0
Four Feet Seam
87
7
Cefn Qlo Balls, Cwm Avon —This enrrp-
sponds with the Furnace Vein at Llvnvi
and Maesteg, worked extensively there inpatches: 16 inches worked at Cwm Avon
by level.
Biq Seam
9
0
88
8
Middle Clay Vein, Cwm Avon .—One course.
Clay Seam . .
1
9
Coal and Mine Seam .
6
0
89, 90
9
Five Feet Pins, Cwm Avon .—Two courses.
Five Feet Seam
5
C
Lower Four Feet Seam .
4
0
91 to 93
10 .
Tack Mine, Cwm Avon.
The total thickness of measures from Wernddu Seam toLower Four Feet Seam is about 800 yards. The beds ofcoal in this division are all bituminous. Several im-portant beds of coal and various measures of ironstoneare known to exist below the Lower Four Feet Seam coal;but the entire extent of the lower beds is not yet provedin this division of the South Wales coal-field.