May 15, 1914.

THE COLLIERY GUARDIAN.

1097

THE NEW PERMITTED EXPLOSIVES.

FOR STONE WORK AND HARD COAL.

Igs

W'

AN ALL-ROUND EXPLOSIVE.

THE ROUND COAL GETTER.





Improved Self-contained Grinding Mills producing
correct grade of dust at one operation.

A No. 4 size Mill will be shown at the

NORTHERN COLLIERY and

MINING EXHIBITION

June 12=27

MANCHESTER.

WM. JOHNSON & SONS (LEEDS) LTD., Armley, Leeds.

A large
number of these Mills
have been sold.

MANY REPEAT ORDERS

HNTHRflCITECOflL

References to users are invited.

Established 50 Years.





We have Specialised in this
class of Machinery, and have
designed and made more than
all other firms combined.