November 8, 1918.

THE COLLIERY GUARDIAN. [supplement page ix.]	993

SPECIAL Self-contained MACHINE for CORRECT GRINDING of

STONE-DUST

For FIERY WORKINGS.

BRICKMAKING
MACHINERY

Suitable for COLLIERY SHALES.

Richard Scholefield, las Leeds.

* Phone 1513.	ENQUIRIES SOLICITED. Wire “Brick, Leeds.”

—“PROTAN”—,

For BOILERS.

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

Iii conjunction with Soda Ash

Enables the Boiler User to compound the most efficient
llllllllll SCALE REMOVER llllllllli
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.

PRINCEPS PATENT

“DEFLECTOR” OIL SEPARATOR.

he:

ONE OF THE LARGEST
EXTRACTORS MADE IN THIS
COUNTRY.

Capacity, 300,000 lbs. of
steam per hour,
60" diameter main.

PRINCEPS & CO.,
Engineers,
SHEFFIELD.

CEMENTATION for
WET VIRGIN GROUND

YEARS of STUDY
and EXPERIENCE
HAVE BROUGHT
MY SYSTEM OF
CEMENTATION
TO PERFECTION.

TO COLLIERY PROPRIETORS.

Shafts sunk, tunnels driven, and
other mining constructions carried
out in difficult and very wet ground
by the best method. Success guar-
anteed.

19 shafts in Great Britain sunk with
cementation.

Ferro-Concrete Lining a speciality.

Feeders of water in shafts or levels
effectually treated.

ALBERT FRANCOIS, doncaster.

Telegrams—“ Francois, Doncaster,”	Telephone—408 Doncaster.

Partoers: Albert J. Frangois (Belgian); Thomae Blandford.

Established 1800.	Telegrams—“ Lettering, Sheffield.”

Brass Time Checks

JOHN LAWSON A SONS,
Manufacturers of every kind of
STEEL STAMPS, LETTERS,
FIGURES, BRANDS, STENCIL
PLATES, Ac.

Telephone No. 577.

Roebuck Letter Works, 26, Carver Lane, SHEFFIELD.

PIPE

LINES

WATER, STEAM, OIL, AIR, GAS, HYDRAULIC.

CONTRACTS COMPLETED THROUGHOUT UNITED KINGDOM.

J. W. HOUSTON & CO., partick cross, GLASGOW.



/BANKS >

NETHERTON

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- B °. 8 ’ 1

MAKERS
OF
LANCASHIRE.
CORNISH. otdherl
types or BOILERS,

SUPERHEATERS, %'S.KKZ-

CONTRACTORS FOR COMPLETE BOILER HOUSE EQUIPMENT.