December 13, 1918.

THE COLLIERY GUARDIAN.

1257

It speaks for itself

1050

1000

1100

GO

80

70

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500

■4oo u;

X
-300 tri

600	700	800	900	1000	1100

GALLONS PER MINUTE.

surface.

minute.

Pumping Plant in a Colliery Pumproom 1,050 feet below
Three units each delivering 50,000 gallons per hour to the surface.

Efficiency of Pumps, 79 per cent. Speed, 1,485 revs, per

Motors work at 5,500 volts.



Write tor List No. 736.

Pulsometer engineering C° IL

OFFICES :

WORKS:

11, Tothill Street,

Nine Elms Iron Works

LONDON, S.W. 1

READING