833
4 1 - Llanelly Droydeg or rock vein, from 5 A to 7 feet in thick-ness , used at the forges and mills. Cross, reedy coal ; breakinginto cubes with a dull pitchy fracture, and a few scales of
pyrites.
Lost in coking . . • 21-87
Coke , semi-bituminous . . 78-13
- 100 parts.
Analysis:—Volatile in coking . . • 21'87
Carbon .... 72'13
Clay ashes, pink-colour . . 6'
- 100 parts.
5. Llanelly Tach Coal, 3 feet thick; used for household pur-poses. A beautiful reedy coal, with cones across the lamina:,easily separated from the mass of the coal; clear and shining,and entirely free from pyrites or spar.
Lost in cokingBituminous coke
Analysis:—Volatile in coking .Carbon
Ashes of a bright pink
25-57
74-43
- 100 parts.
25-570
70-055
4-375
-100 parts.
6. Llanelly Yard vein of Coal , £ feet 9 inches thick; used inthe blast-furnaces. Strong, hard, reedy coal, with plates of ironPyrites in the joints and on its surface.
Lost in coking . . . 19-32
Bituminous coke . . . 80*68
- 100 parts.
Analysis :—Volatile in coking . . . 19*32
Carbon .... 78*68Asbes , fawn-colour • . .2*
- 100 parts.
Llanelly Old Coal, 5 feet 6 inches in thickness; excellentblast-furnace coal. Peculiarly constructed coal, of alternatinglaminae of bright coal and very pure carbonaceous clod.
Lost in cokingCoke , semi-bituminous
Analysis :—Volatile in coking .
Carbon
Ashes, resembling pipe clay .
18-95
81-05
- 100 parts.
18-95
77-55
3-50
- 100 parts.
Examination and analyses of four varieties of coals used atUle Nantyglo Iron Works.
3 H