898

THE COLLIERY GUARDIAN.

May 2, 1913.

TRAM NAILS

DOG SPIKES

SIGNAL WIRE

ALBERT FROST & CO.,

SHEFFIELD.

NO MORE PIT CAGE ACCIDENTS!

Ascending
and
Descending
Gages
Safeguarded.

No
Interference
with
Winding.

Starting
in the
Wrong
Direction
Prevented.

% f'

■

W ..	--------------------------------------

Safety
assured
with
‘THE
VISOR.

The most
Effective
Machine on
the
Market.

Over 200
at work.

particulars to JOHN WOOD & SONS Ltd.,

Telephone : 55 Wigan.

Engineers, WIGAN. Telegrams: “Haulage, Mtigan.”