February 1, 1918.

THE COLLIERY GUARDIAN.

223

PLOWRIGHT BROS. LTD.,

Brampton Iron Works, Chesterfield.

S peciality—

COAL SCREENING < CONVEYING

The Mastery of the Air.

I

are always successful
in the struggle for
------ the --------
Mastery of the Air.

SEND US YOUR ENQUIRIES FOR:

Ventilation of Ships, Buildings and Mines,
Induced Draught on Boilers, Dust Removal,
High Pressure Fans for Forge Fires & Cupolas,
Air Washers for Cooling and Purifying the Air,
Fans for Removing Fumes or Steam,
Steam Heater Units for Heating Factories.

DAVIDSON & CO. LTD.,

Sirocco Works,

BELFAST.

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. __________________

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SECTION OF SCREENING PLANT AT BENTLEY COLLIERY DONCASTER.





CONSIDERABLY OVER



100 PLANTS

NOW AT WORK IN

GREAT BRITAIN
AND THE COLONIES.

Estimates and Designs on application

“ MECO”

Hammer Drill

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W

The rapidity with which this little tool
drills into coal or stone of medium con-
sistency is one <>f its features. This is
owing to the patent Flap Valve which
is the most flexible on the market,
and which does not deteriorate but
improves with use. This drill will bore
a 4 ft. hole in coal in one minute.

Tn the manufacture of the “Meco ” only
the best forged steel is used ; wearing
parts being specially hardened and
ground to gauge. This form of con-
struction results in a tool which is un-
surpassed for durability and low spare
part cost.

The “Meco” is made in 3 sizes, the largest of
which drills holes up to 20 ft. deep.

PROMPT DELIVERY IF YOU
ORDER AT ONCE.

jz - IS9EE

A- d

THE MINING ENGINEERING CO. LTD.,
“ Meco ” Works : Moorfields, Sheffield.

Telephone No. 4530 Central (2 Tines).

Telegrams—** Meco, Sheffield.