September 3, 1915.

THE COLLIERY GUARDIAN.

503

Stoppers’ 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.

———— Pull particulars on application to ——-—-—

The Koppers* Coke Oven and Bye-Product Co,

301, GLOSSOP ROAD, SHEFFIELD.

SELF-CONTAINED MILL Producing

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.

BUOYANT, MIXED or COARSE

Dust at one Operation, from
Run of Mine Shale.

WALKER BROS. (Wigan) Ltd.,

with LIGHT DISC VALVES to

A PAIR OF COMPOUND CORLISS TWO-STAGE
AIR COMPRESSING ENGINES

“ INDESTRUCTIBLE

Air Compressing and

NEW PATENTS

Blowing Engines

------------------------- TWIN TANDEM COMPOUND WINDING
ENGINES.

TYPE VENTILATING FANS for Steam or Electric Driving.

WINDING. HAULING AND GENERAL. MINING MACHINERY

PAGEFIELD IRONWORKS, WIGAN.

NEW BROAD STREET HOUSE, E.C.