June 21, 1918. THE COLLIERY GUARDIAN. .. 1243 Albert Frosts „ HoujzirdSt. Sheffield. f'NteSMS Dos Spikes -—-o— * DELIVERIES* o FROM STOCK ® “union” brand RED LABEL. PLOWRIGHT BROS. LTD, Brampton Iron Works, Chesterfield. Speciality— COAL SCREENING s CONVEYING • • y~. <7 7:^ j-L ’',3.1'2, "-A- a V;- t', ■ - ..-Vf SECTION OF SCREENING PLANT AT BENTLEY COLLIERY, DONCASTER. CONSIDERABLY OVER 100 PLANTS HOW AT WORK IN GREAT BRITAIN AND THE COLONIES. Estimates and Designs on application The “Meco” is made in 3 sizes, the largest of which drills holes up to 20 ft. deep. Telephone No. 4530 Central (2 lines). Telegrams—“ Meco, Sheffield.” “ MECO ” Hammer Drill The rapidity with which this little tool drills into coal or stone of medium con- sistency is one of its features. This is owing to the patent Flap Valve which is the most flexible on the market, and which does not deteriorate but improves with use. This drill will bore a 4 ft. hole in coal in one minute. In the manufacture of the “Meco ” only the best forged steel is used ; wearing parts being specially hardened and ground to gauge. This form of con- struction results in a tool which is un- 1 surpassed for durability and low spare part cost. PROMPT DELIVERY IF YOU ORDER AT ONCE. THE MINING ENGINEERING CO. LTD., “ Meco ” Works : Moorfields, Sheffield.