1076 THE COLLIERY GUARDIAN. June 9, 1916. j—TREFOR—| BORING AND SINKING CO., Contractors for Deep Borings and Pit Sinkings all over the World. ♦ Bank Chambers, 329, High Holborn, LONDON, W.C. English Patent STAUFFER and “ TELL-TALE ” Lubricators. Certainty—Economy—Cleanliness. TAUFFER’S LUBRICANT” Regd. Trade Mark. TANDARD MACHINE GREASE MADE SOLELY for OVER 30 YEARS by TRIER BROS. Ltd., AT THEIR CUMBERLAND WORKS, LONDON, S.E. Office : Caxton House, Westminster, S.W. Agent for Northern Counties— Messrs. JOHN YOUNG & SONS, St. Nicholas Chambers, Newcastle-on-Tyn«i (OAN Casts