June 22, 1917.

THE COLLIERY GUARDIAN

1183

HARDY “SIMPLEX

Type B6.

Medium, for
drifting, etc.

HARDY “SIMPLEX

Type B5.

Extra light, for
ripping & brushing.

HARDY “SIMPLEX

Type B7.

Heavy, for sinking.

These machines are in use to the number of many thousands all
over the world. They have utterly defeated all competition, and
stand supreme as examples of fast-boring rock drills of immense
durability and superb engineering finish.

TRIALS ARRANGED.

THE HARDY PATEHT PICK CO. LD.



J