Bulletin . A. TIMBERING AND STONE PACKING IN PRELIMINARY GALLERY AT B. STONE DUST ON HANGING SHELVES IN ALTOFTS COLLIERY. I N VI . I [Q VI K>N.^ \ | || |;.,|-| | | luNS. I -V, l>\ means of the present equipment, however, h ba hen j,., ihlet show thai when once initiated in Hie presence • >! abundant andinflammatory sustenance i coal-dust explosion will travel com-paratively slowlj l> corresponding concomitantpressures. IT, after this, conditions still remain favorable to propgation, the maximum pressures and velocities will probably prevailundiminished until opposed by tr
Bulletin . A. TIMBERING AND STONE PACKING IN PRELIMINARY GALLERY AT B. STONE DUST ON HANGING SHELVES IN ALTOFTS COLLIERY. I N VI . I [Q VI K>N.^ \ | || |;.,|-| | | luNS. I -V, l>\ means of the present equipment, however, h ba hen j,., ihlet show thai when once initiated in Hie presence • >! abundant andinflammatory sustenance i coal-dust explosion will travel com-paratively slowlj l> corresponding concomitantpressures. IT, after this, conditions still remain favorable to propgation, the maximum pressures and velocities will probably prevailundiminished until opposed by tracts of Qonsupporting or screeningmaterial. EXPERIMENTS at ALTOFTS \ MEANS OF [ONITION. In reference to 11uv initiation of a coal-dust explosion it may herel>e mentioned that although shot firing lias hitherto been resorted toin the galleries, the fact that a blown-out shot is but one of severalpossible causes in practice has at last been recognized, and conse-qu
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectminesandmineralresou
