cover image: Report of the Committee appointed to investigate the dangers arising from coal-dust in Indian Mines

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Report of the Committee appointed to investigate the dangers arising from coal-dust in Indian Mines

1924

As a result of this the dust being made from the richer and softer 'parts of the seams is of ten of better quality than the average of the seam. [...] The method of determination followed by the British Coal Dust Committee was to ascertain the percentage of the coal substance extracted by the solvent and then to obtain the relative ignition temperature of a sample of fine dust from the same coal. [...] On the assumption therefore that the percentage extraction by pyridine is a measure of the inflamability of the dust it would appear that the first three Indian coals in Table IV are of the same order as regards inflammability as the British coals 219 N. and 213 N. The ignition temperature of 219 N. was 1080° C. and of 213 N. 1090° C. and it is probable that the dusts of the Indian coals of S [...] In the series of explosion tests carried out in an experimental mine under the auspices of the United States of America Bureau of Mines * one 'if the most important results obtained was that the explosbility of a coal-dust varies with the ratio of volatile combustible to the total combustible mattef in the coal. [...] From a comparison it would appear that on this basis the first six of the series of the Indian coals are about of the same degree of inflammability as numbers 224 N. and 219 N. of the British series and the Pittsburgh bed of the American coals.
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Segment Pages Author Actions
Frontmatter
i-i unknown view
Constitution of the Committee Terms of Reference
1-1 unknown view
Introductory
1-2 unknown view
Experimental Evidence of the Explosibility of Coal-Dust
2-3 unknown view
Evidence of the Explosibility of Coal-Dust from Colliery Explosions
3-5 unknown view
Evidence of the Explosibility of Coal-Dust in India
5-7 unknown view
Comparative Inflammability of Indian Coals
7-12 unknown view
Tests of the Inflammability of Indian Coal-Dusts
12-18 unknown view
Experiments with gunpowder
19-19 unknown view
Demonstration tests
19-20 unknown view
Conditions as Regards Coal-Dust in Indian Mines
20-23 unknown view
Removal of Coal Dust from the Mines
23-23 unknown view
Shot-Firing
23-26 unknown view
Conditions in Seams Which Give Off Fire-Damp
26-28 unknown view
Summary
28-29 unknown view
Appendix
30-37 unknown view
Backmatter
i-i unknown view

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