May 25, 1917.

THE COLLIERY GUARDIAN.

1013

Koppers’ Coke Oven

Is undoubtedly the most successful Bye-Product Oven on the market.

Since its introduction a little over 10 years ago there have been built

15,000 KOPPERS’ OYENS.

KOPPERS’ OVENS ARE AT WORK HEATED BY
PRODUCER GAS AND BLAST FURNACE GAS.

KOPPERS’ DIRECT RECOVERY PROCESS

IS THE SIMPLEST ANO MOST EFFICIENT
SYSTEM OF AMMONIA RECOVERY.

PLANTS ERECTED FOR THE RECOVERY OF
BENZOL & TOLUOL, FOR TAR DISTILLATION &
THE MANUFACTURE OF SULPHURIC ACID.

'—————— Full particulars on application to --

The Koppers' Coke Oven and Bye-Product Co.,

301, GLOSSOP ROAD, SHEFFIELD. -SSrSMSK.-

' WRIGHT'S FORGE & '
ENGINEERING CO. LTD.

IGHTaC?

--- Sole ManufactiatterB.--------

NEPTUNE FORCE, a 57, BISHOPSCATE,
TIPTON.	a LONDON, E.C. 2.

MACHINE CUT GEARING.

Double Helical Staggered or Chevron.

Reducing Gears. Haulage Gears.
Time Recorders & Recording Instruments.
Watchmen’s Watches.

THE LEWELLYN MACHINE CO., Bristol.

THE PATENT	‘XCM E ««

St0RrEAKEp

O ** LEICESTER

GOODWIN. BARSBY&C9

&	Metal Merchants.

Telegrams—
METALLOID. / X
/

ENQUIRIES /	& A

Solicited.

J. S. UNDERWOOD a C°

Cotton Mill Row, SHEFFIELD.

Telephone-

\	3573.

The Cambrian Approved Double
Glass Lamp. No. 1 C.G.

^6

J N-_

Giving a bright light at the end
of the shift = 14 C.P.

Telephone:	Telegraphic Address:

No. 7 Aberdare.	‘‘Lamps, Aberdare.”

Approved (Flame)
SAFETY LAMPS

To meet the requirements
of the new Mines Act.

The CAMBRIAN

Fitted with Magnetic, Pneu-
matic, or Lead Locks, Electric
Ignition, and Double Gauzes.

Our Flame Safety Lamps give
a greater Candle Power than
any Miner’s Electric Lamp.

MAKERS OF THE

NEW MAGNET UNDERGROUND
PATENT SAFETY LAMP RELIGHTERS.

E. THOMAS &
WILLIAMS Ltd.,

Cambrian Lamp Works,

Aberdare, South Wales.