420 THE COLLIERY GUARDIAN. March 2, 1917. i—“TREFOR”—| BORING AND SINKING CO., Contractors for Deep Borings and Pit Sinkings all over the World. Bank Chambers, 329, High Holborn, LONDON, W.C. Patent STAUFFER “ TELL-TALE ” and Lubricators. Polish O' 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-Tyntt The LUHRIG COAL & ORE DRESSING APPLIANCES Lio. Engineers and Contractors for COAL WASHING, STORAGE, AND ORE DRESSING. ------ OVER 200 PLANTS ERECTED, and in course of Erection. ------- Capacity from 150 tons to 2,000 tons per day of 8 hours. DESIGNS SPECIALLY PREPARED TO SUIT LOCAL REQUIREMENTS. INSPECTION OF PLANTS WORKING INVITED. ALL MACHINERY OF BRITISH MANUFACTURE. Disintegrators. Tipplers. Screens. Picking Tables. Loading Belts. Conveyors. Elevators. Pumps. Crushing Rolls. Head Office-32, VICTORIA STREET, LONDON, S.W. Tel. No.—160 Victoria. Tel. Address—“ Nettoyage, London.” Tel. No.—2874 Central. GLASGOW Office —127, St. Vincent Street. Tel. Address-” Nettoyage.” ffOAN