1248

THE COLLIERY GUARDIAN.

June 6, 1913.

MINING MACHINERY EXHIBITION, 1913,

AGRICULTURAL HALL, LONDON, N.

STAND 93, Row H.

HEDLEY DIALS.

WATER CADGES.

hBII' ■
ftumtHBiHin ■ fi.

SAFETY LAMPS.

For the Official and Working Miner.

LEVELS.

TRANSITS.

DAV1S-BIRAM ANEMOMETERS.

PORTABLE HYGROMETERS,

GRAY SUSSMANN ELECTRIC LAMP.

'80

DAVIS

MAGNETO EXPLODERS.
For Shot-firing.

i

uo

110

I0D

90

80

70

60

5lJ

40|-

S. d*

bo i I
Ro-j-

170 I
60--
50
40 i
Iwl

ALL MINERS’ LAMPS SUPPLIED BY US COMPLY WITH THE COAL MINES ACT, 1911.

Send for Lisis 41 JL.

JOHN DAVIS & SON (DERBY) LTD.,

ALL SAINTS WORKS, DERBY.

Telephone No. 240.	Telegrams—11 Davis, Derby.1*