March 2, 1917.

THE COLLIERY GUARDIAN

421

only

of its utility.

STEEL C° LTD

I

It’s all in the rigid Rib.

No more unsightly buildings

The nature of the ground in colliery districts necessitates a light

weight

type of

account of ground trouble many unsightly structures of timber and corrugated iron have
There is no longer any need for this. A building erected with Hy-Rib and structural
gives

building. On

been erected.

steel not

the desired lightness, but is far more attractive in appearance.

Hy-Rib is a Ribbed Steel Lath which needs supports at I Oft. centres only, and
readily takes 2 in. of cement plaster. Its use ensures the most rapid permanent con-
struction possible, the building costs little or nothing for maintenance and is superior in
every way to the usual type of building.

Illustration shows the Sharlston Colliery
erected on this principle.

Send for Handbook and learn

THE TRUSSED CONCRETE

Co.’s Pit Head Buildings,

64, CAXTON HOUSE, WESTMINSTER, S.W.

CEMENTATION for

□os Spacsss

BRAND

UN ON

RED LABEL.

0

0 FROM STOCK

□

Elms

IQl

WET VIRGIN GROUND

“DEL VERIES

YEARS of STUDY
and EXPERIENCE
HAVE BROUGHT
MY SYSTEM OF
CEMENTATION
TO PERFECTION.

TO COLLIERY PROPRIETORS.

Shafts sunk, tunnels driven, and
other mining constructions carried
out in difficult and very wet ground
by the best method. Success guar-
anteed.

18 shafts completed in England,
and 7 in progress.

Ferro-Concrete Lining a speciality.
Feeders of water in shafts or levels
effectually treated.

fbs A weW

o Q Q Q ® Q a

Albert Frosts

_ HoumrdSt.

Sheffield.

ALBERT FRANCOIS,

Telegrams—“ Francois, Doncaster.”

White House Chambers,
DONCASTER.

Telephone—4 08 Doncaster.

PREVENT COAL MINE EXPLOSIONS

by dusting your mine with stone 'ground in the

GIANT GRIFFIN MILL,

As supplied to the leading Collieries.

Advantages—

MAXIMUM PERCENTAGE OF “FLOUR” OR IMPALPABLE

MAXIMUM

MAXIMUM

FINENESS.
OUTPUT.

POWDER.

MINIMUM POWER.

MINIMUM WEAR AND TEAR.

No Auxiliary Apparatus required for
Finishing the Product.

Heavy Construction.

OVER 4,000 CRIFFIN MILLS INSTALLED.

Also extensively used for grinding*
COAL. LIMESTONE. PORTLAND CEMENT.
PHOSPHATE ROCK. ORES OF ALL KINDS.

Full particulars on application to—

BRADLEY PULVERIZER CO.,

37, WALBR00K, LONDON, E C.