Bulletin . A. CONTACT BREAKER, ALTOFTS EXPERIMENTAL GALLERY; BEFORE J,. CONTACT BREAKER, ALTOFTS EXPERIMENTAL GALLERY; AFTER FIRING. INVESTIGATIONS AT BT7B0P1 US 1 \ I I«> N* S. L51 the Altoftfl gallery, which, owing i the limitation of i trength of thegallery tube, have to be confined to about 367 feet, i inadequate forcomplete bo1u1 in of the problem. APPARATUS AND METHODS AT ALTOFTS AND ;;i<:\ : \i. BT \ i E m I \ I The complex study f coal-dusl explosions obviously involves theuse of delicate recording instruments. Botha! Altofts and at Li6vinthe equipment in th
Bulletin . A. CONTACT BREAKER, ALTOFTS EXPERIMENTAL GALLERY; BEFORE J,. CONTACT BREAKER, ALTOFTS EXPERIMENTAL GALLERY; AFTER FIRING. INVESTIGATIONS AT BT7B0P1 US 1 \ I I«> N* S. L51 the Altoftfl gallery, which, owing i the limitation of i trength of thegallery tube, have to be confined to about 367 feet, i inadequate forcomplete bo1u1 in of the problem. APPARATUS AND METHODS AT ALTOFTS AND ;;i<:\ : \i. BT \ i E m I \ I The complex study f coal-dusl explosions obviously involves theuse of delicate recording instruments. Botha! Altofts and at Li6vinthe equipment in this respect, most of which has been speciallydesigned, apparently leaves little to be desired. At. stations where observations have not yet been sufficientlyextended, tin1 selection of instruments will now be greatly facilitatedby experience gained elsewhere. It is gratifying to acknowledgethat the benefit of such experience is freely and willingly offered to allinterested, both at Altofts and at Lievin. INSTRUMENTS AT Measurement of pres
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectminesandmineralresou
