This photograpk shows, at the left, an Elliott motor-driven blower installed in 19iS.

*esieAafe4- BWTCWER THEY NEED... ipWf'S A BY-PRODUCT... ffn this Bleachery and Dye Works At the Qreat Falla Bleachery & Dye Work*.

Automatic Combustion Controls nmi/nted lales, safeguard!

M%SSal M%R^IE"C ' MAKE THE DIFFERENCE HIAVr-DUTY STEtl BOILCRS There i$ more pul into Kewanee Boilers so their owners got more from them.

American Standard, Inc.

'''AMERICAN STANDARD KEWANEE SQUAREHEAT G--A.S BOILER?.

KeWANEE, SOILED CORPORATION KEWANEE, ILLINOIS Division of AMERICAN RADIATOR & ^tattddpd ^anitdP^ CORPORATION Eastern District Office, 40 West 40th St., New York City 18 BRANCHES IN 64 CITIES 523 COPYRIGHT 1940 PRINTED IN U.

TV REPORT COOO'otted 6 Points to Consider Before Putting TV to Work in Your Plant Become its eye Is unblinking, and special filters eon bo used to compensate for untovi lighting or glare conditions, you see more wit than you could by full-time personal observ{ But the equipment needed varies widely aeco'i to what it has to do.

The Economizer with the "Diamond" Design Here are the four major values in the "diamond" shape <rf the Green Fuel Economizer: 1...

m HALL REPORTINDUSTRIAL WATER Hall Laboratories, Inc.

TUBE TURNS' HELPS DEVELOP NEW PIPING TECHNIQui his story of how .a large Tprocessor saved $50,000 and conserved scarce copper with a new approach to a piping appli cation shows why Tudb Turns, ' Inc. is so highly regarded as an authority on piping engineering.

NICHOLSON TRAPS SAVE CAR OF COAL WEEKLY ioi This Large Steam User Following replacement of oil stoam traps of various makes, with Nicholson units, on Eastern college reports;--"An averoge coal saving of 1 carload per week besides much better hoot distribution".

REfRIGERATION' Here are seven easy-touse formulas to find capacity of your system, be it direct or tndirect type.

More PRACTICAL IDEAS.

DEFENSE DIGEST Your roundup of mobilization news and trends attesting power ml National Production Authority is now a permanent Commerce Dept agcncy.Business executives, on loon for d^month rotation periods, will run its 20 main industry divisions.