THE COLLIERY GUARDIAN.

568

March 23, 1917.

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| THE COTTON POWDER Co. Ld„	
	Manufacturers of Explosives for Mining Purposes.
	REX POWDER  NEW PERMITTED EXPLOSIVE For all kinds of work.
	HEAD OFFICE:
	24, WALBROOK, LONDON, E.C.
	



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The absolute certainty and reliability of
“ The Coventry ’’ Chain drive, qualities
so essential in Colliery Ventilation Instal-
lations, are its chief recommendations.
Illustrated is a Fan Drive at a well-known
Northern Colliery.

Booklets, Blue Prints and all information free from

“THE COVENTRY’’ CHAIN CO. LTD.,
COVENTRY.

NO SUSPICION

between Weighmen.

Denison’s Patent Mercury Resistance

PIT BANK

WEIGHING MACHINE.

.©i.

Quick. Accurate. Durable.

NO WATER.

Pointer Shadowless.

SAML DENISON & SON LT°

Furlea, LEEDS,