March 17, 1916.

THE COLLIERY GUARDIAN.

499

THE

Manufacturers of

NEW EXPLOSIVES COMPANY Ld

ESTABLISHED 1865.

Works: Stowmarket, Suffolk.

Every description of High Explosives for Mining and
Blasting Purposes.

STOMONAL No. 1

The Ideal “ Permitted ” Explosive for Coal Mines.

Particulars and Prices on application to the Company or any of their Agents.

Head Office: 62, London Wall, London, E.C.

GOODALL, CLAYTON & Co. Lo.

LEEDS.

Telegrams :—
“ Vertical, Leeds.”

Telephone:—1982, Leeds.



BOILER HOUSE ECONOMY.

■

When ordering New

Boilers SPECIFY OUR
PATENT DAMPERS,
and have a Perfect Job.

Enquiries Solicited.

Estimates Free.

The “HEYWOOD” AIRTIGHT DAMPER CO. LTD.,

Registered Office: GROVE FOUNDRY, GOMERS1L, LEEDS.

Telephone—141 BATLEY	Telegrams—“ DAMPERS, GOMERSAL.”

GRIFFIN MILLS STONEDUST

MAKERS AND ERECTORS OF

SCREENING PLANTS, PICKING BELTS, SCREENS,
PITHEAD GEARS.

BUNKERS, ROOFS, STEEL STRUCTURAL WORK, &c.

No. 6 REPORT OF THE EXPLOSIONS IN MINES COMMITTEE,
whilst recommending a minimum of 50 °/o passing a 200 x 200 sieve, says
emphatically“ THE FINER THE DUST THE BETTER,” con-
sequently, STONEDUST PRODUCED BY THE GRIFFIN MILL

SYSTEM IS THE MOST EFFICACIOUS PRODUCTION FOR
THE PURPOSE, SEEING IT PREPARES:—

Percentage Horse
Output per hour	Passing	Power

200 x 200 Sieve Required

Dust from South Wales Shale—	1	to	1} tons upwards	83 °/o	25

Dust from Yorkshire and other Shale— 1 to 11 tons upwards	87 °/o	25

No other System of Pulverizing can approach the

GAS RETORT INSTALLATIONS, CONVEYING PLANTS.

Representatives:—H. L. CHESTON, Clarendon House, Boston Spa, Yorks.

W. OGDEN DAYSON, 1, Mount Street, Swansea, for South Wales.

GRIFFIN & GIANT GRIFFIN MILL

for Low Cost of Grinding and Fineness of Product.

--- FOR FULL PARTICULARS, APPLY -

BRADLEY PULVERIZER Co.,

37, Walbrook, LONDON, E.C.