May 9, 1913.

THE COLLIERY GUARDIAN.

943

STONE DUST
For Prevention of Coal Dust Explosions.
SPECIAL PLANT

For "tlxe Production of Correct Fineness of Dust.

ROBEY & CO. LIMITED,

Globe Works, LINCOLN.

THE AVONSIDE ENGINE CO. LTD.

Best
Materials.

Finest
Workmanship.

IN STOCK, for Collie>?ios9 Steel Works,

THE SOUTH WALES COALFIELD. PART II.

By Henry K. Jordan, F.G.S. (Past President and first

Gold Medallist of the South Wales Institute of Engineers).

This Paper, which deals with the western part of the Coalfield, has just
been published by the South Wales Institute of Engineers. It consists of
31 pages of printed matter with Sections and Diagrams. The large drawings
*re issued separately and comprise

1.	A Horizontal Section across the anthracite region of Llandybie and

Pant-y-ffynnon, and via the Dulais Valley to the sea at Swansea. It
is drawn to a scale of six inches to one mile, is 8 ft. in length, mounted
on linen, and geologically coloured.

2.	Comparative Sections of the Lower Measures in the following areas —

(A)	Neath Valley.	(E) Ammanford.

(B)	Swansea Valley.	(F) Loughor Valley.

(C)	Brynamman District. (G) Gwendraeth District.

(D)	Amman Valley.	(H) Gwendraeth District.

These are drawn on one sheet, about 35 by 30 in., mounted on linen, to
a scale of 200 ft. to 1 in.

3.	A Map of Swansea District, on a scale of 6 in. to one mile, showing

the outcrops of the coal seams.

A limited number of the above are for sale, and may be obtained from

The Secretary, The South Wales Institute of Engineers,
CARDIFF.

Price Is., Postage Extra.

** The South Wales Coalfield,” Part I., by Mr. H. K. Jordan, published
in 1908, price £2.2s ..dealt with the eastern half of the Coldfield, ana may be
btained from the Secretary.

AULD’S PATENT

STEAM REDUCING VALVES

THE NORTHERN RUBBER CO.,

" the WICKER, SHEFFIELD.	W?i,VD'

Works-RETFORD, KOTTS.

On Admiralty K,ist.

Manufacturers of—

INDIA RUBBER Sheets, Valves, Washers, Insertion,
Tubing, Hose, &c., Air and Waterproof Goods.
ASBESTOS Packing, Sheeting, Millboard Joints, &c.
GUTTA PERCHA Sheets, Buckets, Strips, Washers,
&c. PACKINGS : Cotton, Canvas, Hemp, Hydraulic,
Soapstone, &c. BELTING: India Rubber, Leather,
Hair, Cotton, &c., ’ Balater and Canvas. PATENT
‘COMBINATION METALLIC JOINTS for H.P. Steam.
“NORTHERN” SPIRAL LUBRICATIVE PACKING.
“NORTHERN” H.P. HYDRAULIC and STEAM HAM-
MER PACKING.

Makers of

COAL-GUTTER HOSE

Sole Makers of the Original Quality

Blue-Line India Rubber Ring.

Sole Makers of

LEATHERITE

For H.P. Steam, Acids, Alkalis, Oils, &c.

Also Makers cf Special FULL BORE
Patent Steam Reducing Valves for
Blowing, Winding, Pumping and other
Engines, and for supplying Surplus or
other steam from high to low pressure
boilers, &c.

DAVID AULD & SONS,

Patentees JfaJfcere, ltd.
Whitevale Foundry, GLASGOW.

WALKER’S PATENT

DETACHING HOOK

For the Prevention of Overwinding.

For particulars, apply to—

THOS. WALKER A SOK LTD.,

58, Oxford Bt., BIRMIJWGH

“BRITISH

PERMITTED

i EXPLOSIVES

Telephone—No. 86 Morley.	Telegraphic Address—“Lamps, Morley."

Codes used—A B C 5th Edition, Lieber’s and Private.

ACKROYD & BEST LTD.,

The World’s Safety Lamp Experts,

MORLEY, nr. LEEDS.

Makers of all kinds of SAFETY LAMPS & LAMPROOM EQUIPMENT.

Hailwood’s Patent
Underground Re-lighting Apparatus

for safely re-lighting Miners' Safety Lamps in the mine. The lamp must be com-
pletely enclosed before the electric current can be switched through the lamp.

: Fracturite :
Pitsea Powder
: Britonite :

Strong, simple and compact. Constructed of accurately machined iron and steel,

and made with the precision

THE

BRITISH EXPLOSIVES SYNDICATE Ld.

124, ST. VINCENT STREET
GLASGOW

of an Admiralty gun. All joints are constructed so
that it is impossible for the joints to be other than
flame-proof.

Saves possible claims under the Minimum Wage
Act, as it defeats excuse for quitting work on account
of extinguished light.

Does away with expensive old-type Underground
Lamp Stations and the use of spare lamps to replace
lost lights.

Management retain complete control of Re-lighting
of the lamps, the key being held by some appointed
person working near the Re-lighting Machine.

Send us your enquiries and orders, which shall
have our best attention.