Bulletin . ,1. ALTOFTS EXPERIMENTAL GALLERY AFTER EXPLOSION OF DUST OCCUPYU MEAR FEET OF GALLERY, AUGUST 11, vibration of tl nee of 7 miles, (Fron. B. EXPERIMENT 58 AT ALTOFTS GALLERY, SHOWING STONE DUST AND SMOKE ISSUINGFROM GALLERY AS THE RESULT OF AN EXPLOSION OF THE 275-FOOT COAL-DUSTZONE. The flame penetrated only 54 feet into a stone-dust zone of 100 feet, therefore not igniting another zoneof coal dust at the outer end of the gallery. (From Colliery Guardian.)

---

Size: 2195px × 1138px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1910, booksubjectminesandmineralresou