July 5, 1918.

THE COLLIERY GUARDIAN.

[supplement PAGE IX.]

45

Koppers’ Coke Oven

Is undoubtedly the most successful Bye-Product Oven on the market.

Since its introduction a little over 10 years ago there have been built

15,000 KOPPERS’ OYENS.

KOPPERS’ OVENS ARE AT WORK HEATED BY
PRODUCER GAS AND BLAST FURNACE GAS.

KOPPERS’ DIRECT RECOVERY PROCESS

IS THE SIMPLEST AND MOST EFFICIENT

SYSTEM OF AMMONIA RECOVERY.

PLANTS ERECTED FOR THE RECOVERY OF
BENZOL & TOLUOL, FOR TAR DISTILLATION &
THE MANUFACTURE OF SULPHURIC ACID.

-------- Full particulars on application to -

The Koppers* Coke Oven and Bye-Product Co

301, GLOSSOP ROAD, SHEFFIELD. -ISKSt

WALKER RROS. (Wigan)

Codes :—A B C, 4th and 5th, Liebers, Moreing and Neal Mining	Ltd,

Code, Al Universal Mining, Western Union.

ESTABLISHED 1866.

AIR COMPRESSORS

A pair of Corliss Compound Steam Two-Stage Air Com-
pressing Engines, with Valves to Walkers’ Latest Patents.

I



with Valves to recent
Patents now at work
(or on order) indicating
over

135,000-H.P.

Raising our total output
during 4 0 years to

500,000-1. H.P.

Patent Unloading
Device for Power-
driven Plants.

WINDING, HAULING & GENERAL
MINING MACHINERY.

VENTILATING FANS

f The

MIRRLEES o

l WATSON J

The Mirrlees-Leblanc

Multijector Air Pump.

Weight of Multijector
for 5,000 kw. is 97 lbs.

The Mirrlees Watson Co. Ltd.,
SPECIALISTS IN CONDENSING PLANTS.
Glasgow.

It

I
I

I

of the Walker “Inde-
structible ” type.

Capacity of Fans at
work or on order.

100,000,000

cubic feet per minute.

HIGH MECHANICAL
EFFICIENCY

whether driven by
steam or electricity.

A pair of Four-cylinder Triple Expansion Driving Engines, with
Corliss Valve Gear.

PAGEFIELD IRONWORKS, WIGAN

Telegraphic Address: “ Pagefield, Wigan.”