., and American Blower Corporation; NESBITT HEATING SURFACE with Dual Steam-distributing Tubes, NESBITT SERIES H HEATING SURFACE, and NESBITT SERIES W COOLING SURFACE, sold by leading manufacturers of fan-system apparatus; NESBITT CONVECTORS, sold by plumbing and heating wholesalers; WEBSTER-NESBITT UNIT HEATERS (See page 1229), distributed in U.

The use of the by-pass around the heating coils permits the mixture of hot and cold air in any desired proportions, by the use of a mixing damper at the point where the two ducts from the heater, and from the by-pass, join to form one duct leading to the room.

The dangers of asbestos hazards were realized aa early as the 1920s when British researchers blamed the fibrous mineral for lung cancers and other respiratory diseases among textile work ers who wove asbestos and Inhaled its dust Asbestos now is considered the leading cause of workplacerelated cancer deaths, William Nicholson, an epidemiologist at Mount Sinai School of Medicine in New York, told the Journal.

i The union official says that, even if the i outbreak of asbestos-related diseases leading maker of asbestos products): exposure level is reduced to 0.5 i among World War II shipyard work "Clinical evidence shows that lung fiber/cm5, a worker would breathe in ers, explains that such a heavy expo cancer in asbestos workers is virtually 4 million fibers in an 8-h workday.

In response to these worries, Monsanto phased out sales of p.c.b.s for applications which could lead to environmental releases between 1970 and 1972.

Steam enters (see cut) the lower chamber, ris ing through in. pipes located within the 1^-in. pipes leading from the upper chamber.

Steam enters (see cut) the lower chamber, ris ing through Jij-in. pipes located within the lj^-in. pipes leading from the upper chamber.

As you see, the results are ex ceedingly low and do not indicate any evidence of lead absorption in quantities greater than those found in ordinary workmen.

'With out eliminating completely frank gastro-enteritis. their experience leads them to think that the mgns manifested in the digestive tract In cases of athrepsia ara nek primary but aeeondary to eseptiewmia, usually due to infection in the ear.

Quigley, director of health and safety at National Lead Company of Ohio at Fernald, Ohio has been elected president of the American Academy of Occupational Medicine for i960.

The extreme ease of starting and operating a gas-burning appliance leads to the pilot light being lighted on the first cool day of the season.

National Lead Company.

The use of a by-pass around the heating coils permits the mixture of hot and cold air in any desired proportions, by the use of a mixing damper at the point where the two ducts, one from the heater, and one from the by-pass, joint to form one duct leading to the room.

The Uit mattrU--PIONEEH WHITE LEAD, injjo lirurej gQ, tnc uni color-- vr conUned with (tnc-'imo AIJI, la it* rniLficaJr Utf!

262 Heatint Systems m CENTRIFUGAL PUMPS _____ FEATURING Extra-sturdy construction Highest 'Buffalo' quality Peak hydraulic efficiency The Buffalo representative near you is a leading authority on pumps and pumping applications He'll be glad to discuss your requirements with you.