1204 THE COLLIERY GUARDIAN. June 29, 1917. New Patent “Hardy” Air Pick for Colliery Work. Every Modern Colliery should use this . new Labour-Saving Tool. y Can be used for many jobs underground and save time. WEIGHT 15 1b. Try the “Hardy” Air Pick for dressing up corners in headings, for taking down shale bands, for cutting girder holes, in fact, wherever the work is hard and slow for an ordinary pick. For Coal getting in hard laminated Coal, the “ Hardy” Air Pick will prove invaluable. OVER 125 ORDERED RY ONE COLLIERY. THE HARDY PATENT PICK CO. LD.