Bulletin . —Elevation of apparatus for igniting coal dust by gas flame Experiments at the Altofts gallery will be resumed in May, a fuH report on the work done to date is being preparedand will be published a For a review of some of the conclusions in the first report on the work at Altofts, see page 90. INVKSI [Q VI [ONH \T [{Op] \ ?. I \ I IONB. INVESTIGATIONS AT FRAMKHIKS IN OF INQ1 [BY, In Belgium Investigations on coal du I have been chiefly directedlo the degree of inflammability as compared with the volatile mattercontained in the dust,
Bulletin . —Elevation of apparatus for igniting coal dust by gas flame Experiments at the Altofts gallery will be resumed in May, a fuH report on the work done to date is being preparedand will be published a For a review of some of the conclusions in the first report on the work at Altofts, see page 90. INVKSI [Q VI [ONH \T [{Op] \ ?. I \ I IONB. INVESTIGATIONS AT FRAMKHIKS IN OF INQ1 [BY, In Belgium Investigations on coal du I have been chiefly directedlo the degree of inflammability as compared with the volatile mattercontained in the dust,, and »»lso to the liability < i;riiiii\ explo-sives in I he absence ! gas. OBJECTIONS TO WATERING ROADWAYS. The possibility of minimizing the coal-dust danger by watering theroadways has had to be at least temporarily disregarded in view ofthe prejudicial effect both on the health of the miners and on theeconomical working of the mines which that measure would unques-. ^^?jfe Figure 18.—Detachable section, Frameries gallery. tionably entail. The Belgian mines are deep, depths of 800 metersbeing quite common, and many workings reach a depth of 1,000 and1,100 meters. The temperature at that depth is about 45° C. (113° F.),and if charged with humidity in addition the atmosphere obviouslywould not be fit to work in. Besides, watering near the coal face,wmere it is considered to be most necessary in some cases, has beenfound to cause serious disturbances in the coal-bearing strata, andthus materially to raise the cost of production of coal, quite apartfrom the increased risk of fatal accidents from In the face of such grave objections, M. Watteyne explained,we have not yet felt justified in recommending compulsory [univer-sal] watering in Belgium. oCoal is extracted mainly by pick in the Belgian gassy collieries. Explosives (of permitted charac-ter) are used only in rock work. In brushing back in the passageways watering is generally done i
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectminesandmineralresou
