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APPENDIX.
REPORT ON SAMPLES OF COAL DUSTS — MORE OR LESS CINDERED — FROM THE BUSTY SEAM, URPETH COLLIERY.
| Approximate Analysis | ||||||||
|---|---|---|---|---|---|---|---|---|
| No. | Place where collected | Moisture | Volatile matter | Fixed carbon | Ash | Total | Ratio of fixed carbon to volatile matter C/V | Remarks |
| 1 | From props 18 yards outbye of water in left-hand crosscut. Towneley seam. | 1.00 | 24.33 | 59.69 | 14.98 | 100.00 | 2.45 | This dust had been blown across water. Dull black. Dry. Somewhat cindered. Free from much grit. Gives coherent coke. A somewhat sandy reddish ash. |
| 2 | Coked dust from props, inbyeside of water in left-hand crosscut. | Nil | 22.32 | 64.80 | 12.88 | 100.00 | 2.90 | Is in cakes. Highly cindered. Porous. Dry. Gives a good flame on ignition, and leaves a fairly spongy coherent coke. |
| 3 | Dust on inbyeside of props in middle crosscut. | 0.37 | 21.76 | 61.49 | 16.38 | 100.00 | 2.83 | Fine black dust, similar to lampblack, mixed throughout with particles of bright coal. Not gritty. Yields a good coke; coherent; rather gritty on surface, and a red ash. |
| 4 | Coked dust from outbyeside of props in middle crosscut. | 0.27 | 19.24 | 60.19 | 20.30 | 100.00 | 3.13 | Much cindered. Free from stone. Gives a coherent coke less spongy than No. 3. Ash red brown. |
| 5 | Coked dust from right-hand headway. | 0.25 | 20.11 | 64.30 | 15.34 | 100.00 | 3.20 | Much cindered. |
| 6 | Very fine dust off packs, right-hand headway. | 0.84 | 24.99 | 66.20 | 7.97 | 100.00 | 2.65 | Brown powder. Mixed throughout with bright coal, coke gritty and rough. |
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