August 21, 1914.

THE COLLIERY GUARDIAN.

409

Walter Scott Ltd.

Leeds,	LEEDS STEEL WORKS.	England.

MANUFACTURERS OF

BRITISH STAMDARD ROLLED STEEL JOISTS, CHANNELS,
TRAMRAILS AND PERMANENT WAY RAILS, Ac.

Example of 10 in. * tin. ■ 421b. R.S Joists carved for Framework to Roadway.

Pit Head Frame.
k Erected in Works
for inspection.

ROLLED STEEL JOISTS for PIT PROPS,
FRAMEWORK TO ROADWAYS, Ac.

STRUCTURAL STEELWORK FOR BUILDINGS, &c.

Mild Steel Blooms, Billets, Slabs, Tinbars. Rounds & Flats.

Rolls cut for Special Sections and to approved quantities.

Books of Sections and other information on application.

KEITH MINE FANS.

•I

<1

If

Motor=driven Keith Fan for In=bye Ventilation

Keith Mine Fans are made
IN THE LARGEST SIZES WITH
SIMPLE REVERSING ARRANGEMENT

HIGHEST EFFICIENCY AND
STRONGEST CONSTRUCTION.

James Keith & Blackman C° L™

27, Farringdon Avenue, LONDON.

And at Cardiff, Newcastle, Manchester, Leeds, Glasgow, &c.

ALBERT FROST&C?,
HOWARD STREET.
SHEFFIELD.

WIRE: flLFRO,SHEFFIELD
’PHONE*. „Q366,CENTRAL
CODE t fl.B.C.A-th E9,

TOOSTS i
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f DOG
SPIKES!

GALVANIZED

.flWlREii.

THESPECWLLINES' WEHRMDLE
QUICKESTDELIVERY'GIMR(]NTEED

| SPECIFY and SEE YOU GET

I	WAILES, DOVE & CO.’S	|

| “BITUMASTIC^ Solution,
| FOR ALL COLLIERY IRONWORK. j
J STOPS ALL CORROSION, g
1	SUPPLIED READY FOR USE.	H

H	Not affected by Chemical Fumes, Atmospheric Changes, &c.	h

=	Write now for Booklet “C,” to SOLE MANUFACTURERS—	=

| WAILES, DOVE & CO. LD., Newcastle-on-Tyne. g

PREVENT COAL MINE EXPLOSIONS
by dusting your mine with stone ground in the
GIANT GRIFFIN MILL,
As supplied to the leading Collieries.

Advantages—
MAXIMUM PERCENTAGE OF “FLOUR” OR IMPALPABLE
MAXIMUM FINENESS.	POWDER.

MAXIMUM OUTPUT.
MINIMUM POWER.
MINIMUM WEAR AND TEAR.
No Auxiliary Apparatus required for
Finishing the Product.
Heavy Construction.

OVER 3,000 CRIFFIN MILLS INSTALLED.

Also extensively used for grinding
COAL. LIMESTONE. PORTLAND CEMENT.

PHOSPHATE ROCK. ORES OF ALL KINDS.

Full particulars on application to—

BRADLEY PULVERIZER CO.

37, WALBROOK, LONDON, B.O.