February 21, 1913.

THE COLLIERY GUARDIAN.

419

--- THE ----—

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 nine years orders for over 9,000 Ovens have been placed
with us, of which number over 4,250 are repeat orders. These orders represent a capital
cost of over	_

<£7,500,000.

-- SIMILAR SUCCESS ATTENDS THE INTRODUCTION OF -

KOPPERS’ NEW SYSTEM OF
____________EYE-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.

ADVANTAGES OF NEW SYSTEM

Effluent Liquor reduced by 50 per cent, and upwards.
Great Saving in Steam Consumption.

Greater Yield of Sulphate and Benzol.

Consumption of Water is considerably Reduced.
Less Labour Cost.

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

20,000,000

tons of coal per annum.

Pull Particulars on Application to—

THE KOPPERS’ COKE OVEN

Telephone No. 1935.	301, Glossop Road,

AND BYE-PRODUCT CO.,

SWKV WTVRDVW-Kf W* n	Telegraphic Address—

A	Jr JLur JLs ve	“kochs, Sheffield.”

Published February 10th.	TWENTY-SEVEMTH YEAR,

Containing all the latest information up to within a few days of publication.

THE

MINING MANUAL

AND

YEAR BOOK

1913.

By WALTER R. SKINNER.

The Standard Reference Work on Mines.

Price 15/- net.

Post Free (Inland), 15/6.	Post Free (Abroad), 17/-

1,500 pages. In Demy 8vo, bound in RED cloth.

As a result of the amalgamation of the Mining Manual
and Mining Year Book, the combined work is now the
Only book published giving complete particulars of
Mining Companies operating in all parts of the world.

A RECORD OF INFORMATION concerning Mining Companies (Gold, Diamond, Silver,
Copper, Tin, Iron and other Mines, Collieries, Land, Exploration, and Mining Investment
Concerns, &c.), arranged in two sections, African and Miscellaneous, preceded by Tables of
Crushings and followed by lists of Mining Directors, Secretaries, Mining and Consulting
Engineers, and Mine Managers, their Names Addresses, and Descriptions, and Names of the
Companies with which they are connected, and a Dictionary of Mining and other terms.

PABTICTTIaARS of over 3,000 Companies are given, arranged in two sections, 1,010 African
(including Transvaal, Rhodesia, Cape Colony, Natal, Nigeria, West Africa, &c.); and 2,040
Miscellaneous (including Australasia, Mexico, India, America, Europe, Russia, &c.» and. the
Coal, Iron, Tin, and other Mining concerns of the United Kingdom).

THE INFORMATION given of each Company includes the Directors and other officials; date
of establishment; seat of operations ; description of the property, with the purchase con-
sideration ; plant erected or in course of erection; present working results; ore reserves;
details of capital; calls ; dividends paid; and the financial position as disclosed by the
accounts. Highest and lowest prices of the shares for the last four years, also latest price.

THE INDEX, which forms a highly important feature of the book, contains the names of over
5,300 Companies, consequently active, private, or dormant companies can easily be traced.

CRUSHING TABLES and Gold Outputs from the principal mines are given at the com-
mencement of the volume, showing tons treated monthly, results obtained and yield per ton;
also annual yields.

Lists of DIRECTORS (6,000), SECRETARIES (1,300), Mining and Consulting ENGINEERS
and MINE MANAGERS (1,200) include their addresses and descriptions and names of the
Companies with which they are connected.

To be obtained from all Booksellers, or direct from the Publishers,

WALTER R. SKINNER, 11-12, Clements Lane, London, E.C.

AND

“FINANCIAL TIMES,” 72, Coleman Street, London, E.C.

GUTTER PICKS,
HOLLOW DRILL STEELS

AND

TWIST DRILL STEELS

READY FOR USE IN ALL
MAKES OF MACHINES.

from

the Makers:

Buy

THE HARDY PATENT PICK GO. L?

SHEFFIELD.