840 THE COLLIERY GUARDIAN. November 3, 1916. AN URGENT NATIONAL NECESSITY is MORE COAL. TO INCREASE OUTPUT AND TO DO IT QUICKLY AND CHEAPLY use —— DIAMOND COAL-CUTTERS and COAL-FACE CONVEYORS (Air or Electrically Driven) FOR POWER, SIMPLICITY AND RELIABILITY THEY ARE UNEQUALLED. Enquiries to— DlftMOHD COAL CUTTER CO, Wi.eeiele. I COATES & CO. (Sheffield) LTD. I I For Complete Electrical Installation, I I DYNAMO & MOTOR I Rewinds * Repairs, I Any size D.C. or A.C. I I Colliery Work and Supplies a Speciality. I S Large Stocks of Cable, Tubing & Genera! Accessories. I I PRICES AND DELIVERY ON APPLICATION. ■ I Regd. Office-345, GLOSSOP ROAD, SHEFFIELD.TelephI