January 26, 1917.

THE COLLIERY GUARDIAN.

197

Wall Crane.

Hydraulic Jack.

Duplex Punch,

Heavy Lifting Crab.'I

z

String Wall Crab.

Rail Bender.

Sc'ew Traverse Jack. Cin Block. Worm Block.

4s/r for List No. 28.



Wood Haley Jacks.

YOUNGS,’

Ryland Street Works,

BIRMINGHAM.

Patent No. 7638. and Patents Nos. 7241 and
17607 applied for.

LOWER

12

9

RAISEi

8

5

RAISE
.STOP,

Slower

.STEADILY.

WINDING
SIGNALS
“ NON-CUMULATIVE.”

DAVIS’S SeIf=Contained
SOLENOID BELL
with DIAL INDICATOR.

Simple, Efficient, Inexpensive.
SEND FOR LIST 41V.

JOHN DAVIS & SON
(DERBY) LTD.,
All Saints Works, DERBY;

and 17. Victoria St., Westminster, London. S.W.
Phone—240 Derby. Telegrams—“ Davis, Derby.”

Steel Underframe

Railway Car-
riages, Tramtars,
and Wagons of
every description
for Hire and Sale
by Immediate or
Deferrod Pay-
ments. Ironwork,
Wheels and Axles.

WAGONS.

Also Wagons with Oak Underframes

Makers of HYDRAULIC PRESSED BOSS
and other WHEELS and AXLES.

PRESSED STEEL BOGIES.

Wagons for
Hire, capable of
carrying Six,
Eight and Ten
Tons, part of
which are con-
structed specially
for Shipping pur-
poses. Wagons
in Working Order
maintained by
Contract.

SECOND-HAND BALLAST WAGONS FIT FOR MAIN LINE TRAFFIC.

Sole Manufacturers of Dean & Churchward’s “ EITHERSIDE

BRAKE,” and Marillier’s Patent “ INSTANTER COUPLING."

The Birmingham Railway
Carriage & Wagon Co. Ltd.,
WORKS : SMETHWICK, BIRMINGHAM.

Telegrams—“Carriage, Smethwick."	Telephone—No. 296 Smethwick (4 lines).

ANNALS OF COALMINING & THE COAL TRADE.

Bt Post, 25b. M.	By ROBERT L. CALLOWAY.	Price as». net.

The Colliery Guardian Co. Ltd., 30 & 31, Furnival Street, Holborn, London, E.O.

208 pages f’cap folio. Over a hundred illustrations and 60 plates (coloured).

PRICE IQs. (IQs. 7d. post free)

RECORD of First Series of the

BRITISH COAL DUST EXPERIMENTS

Conducted during 1908 and 1909 at the Altofts Experiments Station, by the Committee
appointed by the Mining Association of Great Britain.

PUBLISHED BY —

THE COLLIERY GUARDIAN CO. LTD., 30 & 31, Furnival Street, Holborn, London, E.C.

ROBURITE No. 3.

HELD BEST RECORD for SAFETY for 26 YEARS.

ROBURITE IF 4

Is now BEST & SAFEST

on the Ne-w Permitted List.

NEGRO POWDER No. 2 & DREADNOUGHT POWDER

Also on New Permitted List.

ROBURITE and AMMONAL LTD., GATHURST, near WIGAN.

LONDON OFFICE 103, CANNON STREET, LONDON, E.C.

Telegraphic Addresses: “Roburite, Cannon, London.” “Roburite, Gathurst.”	Telephone Nos.: 141 Bank. 9 Upholland.