|
|
|
|
|
 |
 |
|||
APPENDIX II
SAMPLES OF MINE DUST COLLECTED IN 4TH NORTH DISTRICT ON 26TH AUGUST, 1947, BY MR. R. N. FORSTER, H.M. ASSISTANT INSPECTOR OF MINES
| Results of Analysis | ||||
| Per Cent | ||||
| Moisture | Incom- | |||
| Length of Roadway | Plus | CO2 | bustible | |
| Ash | Matter | |||
| Main Drift from 60 to 110 yds. from offtakes at top: | ||||
| Floor | 56.1 | 1.0 | 57.1 | |
| Roof and Sides | 82.8 | 1.0 | 83.8 | |
| Straight East Gate, from 10 to 60 yds. back from face: | ||||
| Floor | 46.9 | 2.7 | 49.6 | |
| Sides | 64.9 | 2.2 | 67.1 | |
| Roof | 35.3 | 2.2 | 37.5 | |
| East Motor Bord, from South Heading 50 yds. up gate: | ||||
| Floor | 25.0 | 2.5 | 27.5 | |
| Roof and Sides | 56.5 | 1.8 | 58.3 | |
| South Heading, from 2nd East Gate to 50 yds. inbye: | ||||
| Floor | 51.3 | 1.2 | 52.5 | |
| Sides | 61.0 | 1.2 | 62.2 | |
| Roof | 52.5 | 0.8 | 53.3 | |
| 3rd West Bord, from 10 to 60 yds. from South Heading: | ||||
| Floor | 23.2 | 2.0 | 25.2 | |
| Sides | 43.9 | 1.8 | 45.7 | |
| Roof | 47.4 | 0.7 | 48.1 | |
| 4th West Bord, from 10 to 60 yds. up from South Heading: | ||||
| Floor | 22.9 | 1.6 | 24.5 | |
| Roof and Sides | 54.7 | 0.8 | 55.5 | |
| 2nd East Gate, from South Heading 50 yds. up gate: | ||||
| Floor | 23.0 | 0.7 | 23.7 | |
| Roof and Sides | 39.8 | 1.8 | 41.6 | |
| 5th West Bord, from South Heading 50 yds. up gate: | ||||
| Floor | 41.7 | 1.6 | 43.3 | |
| Roof and Sides | 19.3 | 0.7 | 20.0 | |
Contains public sector information licensed under the 
