496

THE COLLIERY GUARDIAN.

March 17, 1916.

WALKER BROS. (Wigan)

LIMITED,

Pagefield Ironworks, WIGAN.

“ Indestructible ” Type

VENTILATING FANS

For Steam or Motor Driving.

EASY MEANS FOR REVERSING AIR CURRENT.

WafcM ■ -■

in**;*

Four Cylinder Triple Expansion Engine with Corliss Valve Gear.

Exhausting Capacity to Date—

OYER 100,000,000 OF AIR
CUBIC FEET PER MINUTE.

AIR COMPRESSING, WINDING,

--------------- AND --

GENERAL MINING MACHINERY.

I®

MAGNETO
EXPLODERS

Complying with the
Explosives in Coal Mines
Order, September 1913.

Exploders for Firing from
Two Shots up to One
Hundred and Fifty Shots.

Registered No. 625969.

TESTING
APPARATUS.

SHOT-FIRING
CABLES.

CABLE REELS.

Send for List 41E.

MADE BY

JOHN DAVIS & SON (DERBY) LTD.,

ALL SAINTS WORKS, DERBY, & WESTMINSTER 5 S?W.

SELF-CONTAINED MILL Producing

BUOYANT, MIXED or COARSE
Dust at one Operation, from
Run of Mine Shale.

20 MILLS
SOLD THIS YEAR.

Several Repeat Orders.

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

Specialities : CRUSHING, GRINDING and SCREENING, BRIQUETTING, CEMENT and BRICKMAKING MACHINERY.

ANTHRACITE CORL

PLANT

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

References to Users are invited.
Established 50 Years.

LTD.,
BRIDGEND,
5DUTH WALES/