494 THE COLLIERY GUARDIAN. March 17, 1916. XS “HARDIAX” “ALL STEEL” Coal-Cutter (Patented). ABSOLUTELY UNEQUALLED BY ANYTHING HITHERTO PLACED ON THE MARKET. *1 Fastest and most durable percussive coal- cutter extant--------Steel from end to end. 30 “Hardiax” machines have been installed by a large North of England Colliery Company. Ask for New Catalogue. TRIALS ARRANGED. THE HARDY PATENT PICK CO. LTD., SHEFFIELD.