December 24, 1915.

THE COLLIERY GUARDIAN.

1319

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

12,500 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.

— -------- puu particulars on application to ——~---—

The Koppers’ Coke Oven and Bye-Product Co

....TSr.XV,...	301, GLOSSOP ROAD, SHEFFIELD. -ESrXifSK.

WALKER BROS. (Wigan) Ltd.,

J

‘•■TDV.	?’•*'

with LIGHT DISC VALVES to

Air Compressing and
Blowing Engines,

F
» ■

TWIN TANDEM COMPOUND WINDING
ENGINES.

NEW PATENTS.

A PAIR OF COMPOUND CORLISS TWO-STAGE
AIR COMPRESSING ENGINES
“INDESTRUCTIBLE” TYPE VENTILATING FANS for Steam or Electric Driving.

PAGEFIELD IRONWORKS, WIGAN

WINDING. HAULING AND GENERAL MINING MACHINERY

NEW BROAD STREET HOUSE, E.C.

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

References to users are invited.

X	Established 50 Years.

ITO
BRIDGEND,

ANTHRACITE COAL"

BREAKING
SIZING
AND
WASHING
PLANT