Report of the Coloured Labour Compound Commission appointed to enquire into the cubic amount of air-space in the compounds of the mines of the Witwatersrand.

Date:
1905
Catalogue details

Licence: In copyright

Credit: Report of the Coloured Labour Compound Commission appointed to enquire into the cubic amount of air-space in the compounds of the mines of the Witwatersrand. Source: Wellcome Collection.

Provider: This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.

    88/130 (page 54)
    Appendix B. Johannesburg, i6th September, 1904. J. Harry Johns, Esq., Chairman, Ventilation Sub-Committee, Transvaal Chamber of Mines, Johannesburg. Sir, Herewith please find results of twenty-one analyses of samples of air taken on the night of the 12th September, 1904, at the Village Deep, Limited, in two experi- mental huts and one room as built by the mine. The taking of samples and the analyses were carried out in a similar manner to those previously reported. We have the honour to be, Sir, Vour obedient servants. Prof. Aug. Prister, B. B.vy, Ph.D., M.A., A. Heymann, M.A., M.Ch. & Ph.^ J.AMES Moir, D.Sc., etc. Analysts. B. B.ay, Ph.D., M.A., Edw. H. Croghan, Samplers. Experimental Hut, with 66 per cent, of Boys. Number of Sample. Time Taken. Number of Persons in Room, Condition of Fire. Number of Candles and Lamps. Velocity of Air. Temper- ature in degrees C. Baro- metric pressure in m.ms. Carbonic Acid in parts per 1000 by vol me. Place of Sampling 1 11 p.m. 36 Glowing 1 Lamp 104' at ^■entilatOI• 140' in chimnev 13 630 0'70 A. 2 , , 0-47 C. 3 1 a.m. 30 12 0-47 A. 4 ,, 0-48 C. 5 3 a.m. ^ , 1 candle 11 , 0'79 A. 6 ” ” >' ” 0-61 C. Experimental Hut, with 9o per Cent, of Boys. 7 11 p.m. 35 Glowing 1 candle and 1 lamp 80' at ventilator 290' in chimr.ey 13 630 0-43 A. 8 ^ , > . , . 0 • 50 C. 9 1 a.m. 32 Smouldering 1 lamp 12 0-71 A. 10 , ^ ,, 0-68 C. 11 3 a.m 33 Out 1 candle 11 Sample broken. A. 12 ” ’ 0'47 C. Room as Built by the Mine. 13 11 p.m. 42 Glowing 1 lamp 125' at ventilator 12 630 O'.37 A. 14 245' in chimnev ,, 0-37 B. 15 1 a.m. 45 13 O '46 A. 16 0'53 B. 17 3 a.m. 44 1 candle 10 0-41 A. 18 ” ’■ ” O'81 B. Outside Air. Weather-. Slight Breize. 19 11 ]).m. 103' 8“ 630 0-31 20 1 a.m. 120' 6 O'.30 120' 6” O'.30