June 21, 1918.

THE COLLIERY GUARDIAN.

1233

By Tests The Best

RESULT OF LATEST TRIAL

INCREASE
IN
EVAPORATION

“PERFECTA” BOILER CIRCULATOR Ltd., 39, Victoria Street, LONDON, S.W. 1

“SINGLE HOOD”

1

AUTOMATIC DUMPING WITH MONOCABLE SYSTEM.

EM ■'/
it!

■'•■'A



ROPEWAYS LIMITED,

2, Eldon Street, South Place, London, E.C. 2.

IIIIIIIIIIIIIIIIIIIIIIIIHII CONSTRUCTORS OF 1111111111111111111111111111

Aerial Ropeways

I	On the “ROE” Systems.

FOR the transport of all classes of
material over any ground, and
for the formation of dumps, spoil banks,
&c. Installations at present in opera-
tion with carrying capacities of 200
tons per hour and lengths of 30 miles.

Telephone—12780 Central.	Telegrams—“Ropeways, London”

AUTOMATIC DUMPING WITH BICABLE SYSTEM.

TURBON.

The LATEST THING in FANS.

Equally suitable for Mine Ventilation, forced and induced
draught, or any other purpose.

Great strength, simplicity and silence.

Highest efficiency. Perfect balance at all speeds.

Suitable for all pressures.

Resists high temperatures without distortion.

No rivets in blades.

Manufactured by THE WADDLE PATENT FAN CO. LTD.,

---FOR the -

TURBON PATENT FAN CO. LTD.,

34k. Viotorfu Btreat. S.W 1.

MINIMUM POWER.

MINIMUM WEAR AND TEAR.

No Auxiliary Apparatus required for
Finishing the Product.

Heavy Construction.

OVER 4,000 GRIFFIN MILLS INSTALLED.

Also extensively used for g-rlgdine
COAL. LIMESTONE. PORTLAND CEMENT.
PHOSPHATE ROCK. ORES OP ALL KINDS.

PREVENT GOAL MINE EXPLOSIONS

by dusting your mine with stone 'ground in the

GIANT GRIFFIN MILL,

As supplied to the leading Collieries.

Advantages—

MAXIMUM PERCENTAGE OF "ELOUR" OR IMPALPABLE

MAXIMUM FINENESS.	POWDER.

MAXIMUM OUTPUT.

Full particulars on application to—

BRADLEY PULVERIZER CO.,

NEL 37, WALBR00K, LONDON, E C.