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Monsanto MONSANTO RESEARCH CORPORATION / DAYTON LABORATORY / DAYTON.

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SEP34 79 IN WASHINGTON Martha Angie and Robert Walters Persistent, prevalent PCBs By MARTHA ANCLE ntf ROBERT WALTERS WASHINGTON (NEAj - WUh apologies to composer Woody Gutitrie. here's a new line for one of the coun> try's best-known folk songs: "Prom the redwood forests to the Gulf Stream waters, tliis land Is soaked with PCB."

HEATINC VENTILATINC AIR CONDITIONING GUIDE 1943 capacity and heat conductance of the jacket, it is more difficult to obtain the true temperature at a point with these than with the exposed etched stem type.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1943 Electric steam boilers are useful in industrial plants which require limited amounts of steam for local processes, and also for sterilizers, jacketed vessels and pressing machines which need a ready supply of steam.

Heating Systems specialties Kieley & Mueller, Inc.

Heating Ventilating T Air Conditioning !

HEATING VENTILATING AIR CONDITIONING GUIDE 1944 Within a few years, however, they find themselves reacting as natives to the new environment.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1944 warm side of the insulation construction, which may be a vapor-proof paper properly applied under the plaster or a vapor-proof finish on the interior surface of the wall11.

HEATINC VENTILATING AIR CONDITIONING CUIDE 1944 : Steam for heating domestic hot water should be taken from the boiler header back of the control valve so that pressures sufficiently high for heating the water may be maintained on the heater.

'-V. - - HEATING VENTILATING AIR CONDITIONING CUIDE 1944 or ice), or indirectly through a barrier wall (as cooling surface).

HEATINC VENTILATING: AIR CONDITIONING GUIDE 1944 tions of the duct.- In the selection and application of the absorptive material, several points should be considered. 1.

HEATING VENTILATING AIR CONDITIONING CUIDE 1944 may involve spray-head equipment to supply humidity.