184 THE COLLIERY GUARDIAN. January 23, 1911. THE “ PROTO ” Czr) RESCUE APPARATUS. Mr J. R. ALLOTT’S free on request. / ■ h. ■a;.. *<, THE ALL-BRITISH APPARATUS ---- is ________ THE SAFEST APPARATUS IN THE WORLD. No Injector employed Always under positive pressure there- fore no danger of drawing poisonous air into breathing circuit. Our “ BULLETIN ” of actual work done in serious cases will be sent free on request. For further testimony as to the efficiency of the “ Proto,” please see paper read before the Institution of Mining Engineers on Sth June, 1913—copy sent MINERAL BORING. ____________________________________ SIEBE, GORMAN & CO. LTD., “ Neptune ” Works, LONDON, S E. Telegrams—“ Siebe, Lamb, London.” Telephone No.—251 Hop. Agent for North America and Mexico- H. N. ELMER 1140, Mokadnoch Block, Chicago Thomson Bros. (Dunfermline) Lt (On Admiralty Litt), Progpactorg for Mineral*, Ac., by Diamond Drill and other Systems, Deepe.t Bore, undertaken. Several already executed to depths from 2,400 to 4,536 feet. Quotation, given for all kinds of Boring, Sinking Artesian Wells, Proving Foundations, &o. Re