April 18, 1913.

THE COLLIERY GUARDIAN.

833

--- TME -----

Koppers’ Coke Oven
has been proved to be the most successful on the market, as is evidenced by the fact that in
the comparatively short period of ten years orders for over 10,000 Ovens have been placed
with us, of which number over 4,250 are repeat orders. These orders represent a capital
cost of over

£8,500,000.

-- SIMILAR SUCCESS ATTENDS THE INTRODUCTION OF -

KOPPERS NEW SYSTEM OF

BYE-PRODUCT RECOVERY.

In the New System the Scrubbing process is entirely dispensed with, and the Ammonia is
recovered direct from the Gas in the form of Sulphate.

ATWAKTTAGES OF NEW SVSTEM

Effluent Liquor reduced by 50 per cent, and upwards.	Consumption of Water is considerably Reduced.

Great Saving in Steam Consumption.	Less Labour Cost.

Greater Yield of Sulphate and Benzol.	Plant is Simpler to Operate, and requires less Supervision.

Plants already at work and under construction to deal with the Gases evolved from .upwards of

25,000,000

tons of coal per annum.

Full Particulars on Application to—

THE KOPPERS’ COKE OVEN AND BYE-PRODUCT CO.,

Telephone Nos. 1935 & 1331 (two lines).

301, Grlossop Road,

Telegraphic Address—
“KOCHS, SHEFFIELD.”

Mechanical Engineering of Collieries. Snpp“r ™

Vol. I., Price 21s. net.	Vo). II., Price 10s. 6d. net.

Supplementary Volume, Price 10s. 6d. net.

THE COLLIERY GUARDIAN CO. LTD.,

30 & 31, Furnival Street, Holborn, London, E.C.

A NEW COAL BREAKER.

WHITAKER’S PATENT.

The Gwalia Forge Co.,

Caergwrle, Wrexham, N. Wales.

ESTABLISHED OVER 250 YEARS.

Absolutely the
best tubs on
the market,
being stronger
in proportion
to their weight
than any other
make. :: ::

I





First=class ::
references
given if desired,
one colliery

alone having
IL -' purchased over

2,000 tubs
from us. :: ::

Caergwrle Steel I?it Wagons.

WE SPECIALISE IN

Colliery Tubs, Draw=Bars, Wagon Couplings,
Angle Work, Colliers’ Rakes & Baskets, Spades,
Shovels and Picks to any Pattern. Also all
kinds of Smith Work and Steel Forgings of
every description.	Prices on application.

Large coal reduced to uniformly sized cobbles or nuts,
without.any cost for labour.

More equal and saleable cobbles made, with less slack
than by other methods.

BREAKERS MAY BE SEEN AT WORK IN SEVERAL DISTRICTS,
BY ARRANGEMENT WITH

The HARDY PATENT PICK Co. Lo„

SHEFFIELD, ENGLAND.