Kingdom.]
Class 1 .— MINING AND MINERAL PRODUCTS.South Side—Akeas S. 1 to S. 27.
153
General
No.
No. ofSeries.
_
~~
Principal Works :—
In
Out
Venalt ....
2
Ystalyfera . . • •
5
6
Yniscedwin . . • •
3
4
Banwen • •
Onllwvnor Brin . • »
2
2
Cwm Ammon . • •
Trim Saren .
2
*3
Gweudraith . •
•
3
Branere . . • •
2
34 Furnaces
12
22
Strata.
Ft.
In.
94, 95
1
Blackband, Ystalyfera . — 14 inches thick,
very local. Yields about 2,750 Ions pei
acre.
96, 97
2
Black Bins. Ystalyfera. — Two courses — o
inches. Yields about 2,400 tons per acre
98
3
Soap Vein, Ystalyfera. — Three courses =
9 to 10 inches. Yields about 2,750 tonsper acre.
Soft Vein Coal .
99
4
Penny Pieces , Ystalyfera — Three courseswith scattered balls. Yields about 3,600
tons per acre.
Penturin Coal .
3
0
100
5
White Pirns, Ystalyfera.— Sometimes called
Coedfalda Mine": Four courses about 16inches in 14 feet ground. Yields about
4,80o tons per acre.
•
White Vein Coal . *
1
6
101,102
6
Black Vein Mine, Ystalyfera. —Two courses
= 8 inches. Yields about 2,400 tons per
acre.
Black Vein Coal
4
0
1.03a to
7
Little Vein Mine, Ystalyfera. — Ten courses
103ft
in 18 feet ground, got with Little Vein
Coal. Yields 7,000 tons per acre. Thisis the most important measure of iron-
stone in this district.
Little Vein Coal . •
3
0
105
6
Billets, Ystalyfera.
106
9
Harnlo Mine, Ystalyfera. — Two courses.
Harnlo Coal . .
2
0
107
10
Big Vein, Ystalyfera. — Two courses = 6
inches. Yielding 1,800 tons per acrewhen worked by level : if worked in
patches 16 feet ground, all interspersedwith stone.
5
6
Big Vein Coal . .
Black Vein Coal . .
2
0
108
11
Brass Vein, Ystalyfera. — Five courses in 13
feet of ground. Yielding 3,500 tons peracre.
Brass Vein Coal . .
4
0
Three Coal Vein . .
3
0
Bryalley Vein Coal . .
3
0
109
12
Little Brass Mine, Yniscedwin.
Little Brass Vein . .
2
0
110,111
Middle Vein Coal • .
2
6
13
Cwm Fil Mine , Yniscedwin. — Three courses..
112
Lower Vein Coal • .
3
0
14
Little Blue Vein , Yniscedwin.
15
Big Blue Vein, Yniscedwin.
114
16
Gnappog Mine, Yniscedwin.
115
17
Pin Mawr Mine , Yniscedwin.
_ Ttxe beds of coal in this district are all anthra-
cite. The measures of ironstone extremely numerousand important, but principally worked in patches or openworks. All the measures in this series bear the appear-ance of having been subjected to an extremely high tem-perature; which has been in all probability the cause ofthe conversion of its beds of coal into anthracite.
General
No.
No. ofISenes.
Principal WorksPentyrchTondu .Cefn Cwsc .Cefn CribbwrDinas
11 Furnaces
General
No. of
No.
Series.
Strata.
Ft.
Rock Vein Coal . .
Double Vein Coal . .
0
Little Vein Coal
3
Bridge Vein Coal . .
1
6
I.anthem Vein Coal . .
5
0
Small Bodur Coal . .
5
0
Great Bodur Vein . .
8
0
Sooty Vein . . .
North Vawr Vein
5
12
6
0
South Vawr Vein
4
4
Second Vawr Vein « •
3
0
Third Vawr Vein .
5
6
Slattog Vein . . .
2
0
Six Feet Vein .
6
0
116,116a
1
Six Feet Ironstone, Cefn Cwsc. — Four
courses = 9 inches.
South Nine Feet Coal .
9
0
117,117a
2
Nine Feet Balls, Cefn Cwsc.— Seven courses
= 17 inches.
Fiery Vein Coal • .
4
0
118,118a
3
Fiery Vein Ironstone , Cefn Cwsc. — Six
courses = 14 inches.
Five Quarter Vein . •
4
6
Great Gribbur Vein . .
6
0
119
4
Gribbur Balls, Cefn Cwsc.— Two courses
= 6 inches.
120
5
Upper Spotted Vein, Cefn Cwsc. —Two
courses = 4 inches.
121
6
Spotted Balls, Cefn Cwsc.— Two courses =.
4 inches.
122
7
Middle Spotted Vein, Cefn Cwsc. — Two
courses = 8£ inches.
123
8
Lower Spotted Vein, Cefn Cwsc. — Two
courses = 4£ inches.
124,124a
9
Variegated Pins, Cefn Cwsc.— Two courses
= 5£ inches.
125,125a
10
Yellow Vein and Balls, Cefn Cwsc. —Two
courses = 8 inches.
126
11
Upper Red Vein , Cefn Cwsc. —Two courses
= 3 inches.
126al26&
12
Upper Red Vein Balls , Cefn Civsc. —Two
courses = 6 inches.
126c
13
Lowest Red Vein, Cefn Cwsc. — Two
courses = 4 inches.
126rf
14
Pin Rhybivr Balls, Cefn Cwse. —One course
= 3 inches.
126e
15
Black Balls, Cefn Cwsc. —Two courses =
3 inches.
126/
16
Double Balls, Cefn Cwsc. —Two courses =
6 inches.
1263
17
Black Pins, Cefn Cwsc. —One course =
3 inches.
126A
18
Upper Blue Veins, Cefn Cwsc. —One course
= 4 inches.
126*
19
Blue Vein Balls, Cefn Cwsc. —Two courses
= 4 inches.
126 'j
20
Lower Blue Veins, Cefn Cwsc. —Two
courses = 3 inches.
126 It
21
Lumpy Balls, Cefn Cwsc. —One course =
5 inches.
126/
22
Pin Garu Balls, Cefn Cwsc. —Two courses= 8 inches.
Small Gribbur Coal .
2
9
Blast
Furnaces.
In
Out
2
)
1
1
2
3
The iron ore principally used at the Pentyrch works isheematite, from the carboniferous limestone on the southof the South Welsh coal-field. The annual production ofiron on the south outcrop is about 25,000 tons.
126a to
Blackband; Jos. Latch, Co. —Colfatch
1266.
Colliery, Gellygaer, Glamorganshire .This Blackband lies in four courses, res-pectively 22, 6, 8, and 6 inches thick.Total thickness, 3 feet 6 inches. It lies
in 6 feet of ground, and yields upwardsof 7,000 tons per acre. Its position isvery high in the coal measures above the
Mynyddis-mwvn Vein of coal.
The South Wales Coal-field extends over an areaof upwards of 800 miles. Both from its extent andthe varied character of its numerous beds of coal and iron,it may be considered as the most important of all our coal-fields. The upper measures furnish the best Red Ash coalsfor household purposes, whilst its lower measures arewell adapted for iron-smelting, and for steam coal.