March 1, 1918.

THE COLLIERY GUARDIAN.	[ SUPPLEMENT PAGE VII.]

459

— THE -----

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
fS 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

....TSr'.X’u™.,	301, GLOSSOP ROAD, SHEFFIELD.

M. COULSON eTcD°;

SPENNYMOOR,

■= MAKERS OF —

Coal Washing and Screening Plant

Coke Oven Machinery

Gas Works & Chemical Works Plant

Ash Washing and Handling Appliances

&c., &c.

4S0 H.P. MAIN AND TAIL HAULAGE GEAR.

TH0S OXLEY |?

Iron, Steel & Machinery Merchants,

Shiloh Works, SHEFFIELD

BUYERS OF SCRAP jIRON, STEEL,
METALS AND OBSOLETE PLANTS.

A CONTINUAL STOCK OF SECOND-HAND
MACHINERY THOROUGHLY OVERHAULED.

— LIGHT AND HEAVY SECTION RAILS.—

Telegrams—“IRONICAL, SHEFFIELD.’’	Telephone—4530 (6 Lines).

—"PROTAN”—r

For BOILERS.

A Commercial form of TANNIC ACID (containing 48 50 % TANNIN).

In conjunction with Soda Ash

Enables the Boiler User to compound the most efficient
llllllllll SCALE REMOVER imillill
at only a fraction of the cost of Proprietary Compositions.

Composition can be based on analysis of water.

Samples and further particulars from

CLEMONS, MARSHALL & CARBERT,

Branch of The Yorkshire Dyeware and Chemical Co. Ltd., Leeds.