1058 THE COLLIERY GUARDIAN. May 23; 1913. Fig. 2.—Plan of South District showing Course of Ventilating Current and Effects of First Explosion. Force in 64 Gate and Crossgate, a little about 19 Face, also down 19 Crossgate. The greatest force apparently developed in 121 Crossgate, increasing when it reached 14 Level, and travelled outbye. Little or no force beyond the level way end. Pjg. 3._Plan of South District showing Course of Ventilating Current and Effecis of Second Explosion. So far as seen no apparent force except on 14 Level, where it was greater than in the first. / / i 4 » 4