I > Air System Equipment Aladdin Heating Corporation 1111 West Ave. 137, San Leandro, Calif.

Heating Systems specialities Strong, Carlisle & Hammond 1392 West 3rd St., Cleveland 13, Ohio "STRONG" The Complete Steam Specialties Line 1.

262 CHAPTER 21 * P.

-80- the supervising personnel who in turn should "sell" the worker by education, possibly accompanied by strict and fair supervision and discipline, Employees exposed to dust hazards requiring the wearing of respirators should be convinced that it is essential to sacrifice some comfort and dignity to avoid serious cases of disability and suffer ing.

INDUSTRIAL HYGIENE In very rare cases, enough dust has been inhaled to cause mechanical blockage of the air spaces.

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Threshold -unit Values f This defense is -vuiti premised end goes tr.jsiy: *The .S* o* ms.

LU O _jO U.QUjO 1 182 PUSHBUTTONS and LIGHTS Type N--Standard (Normal) Duty Control Components WHEN ORDERING SPECIFY Catalog number Pfl..

company Afliwc - ALUbUUijtiAL 1AC Filing Date: 12/JJ/JVVS Securities registered pursuant to Section 12(g) of the Act: None Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Fans and Ventilating Equipment American Blower Company General Offices: Detroit Branches and Sales Offices City and Address Telephone Atlanta, Ga., Bona Allen Bldg.Walnut 5643 Baltimore.

American Society of Heating and Ventilating Engineers Guide, 1930 stripping and storm sash.

American Society of Heating and Ventilating Engineers Guide, 1930 diverter, lowers the dew-point of the mixture, and reduces the tendency of the water vapor to condense.

American Society of Heating and Ventilating Engineers Guide, 1930 i The usual procedure, in determining the moisture content of a repre sentative sample of the material, is to Weigh this sample before it has had a chance to lose weight by evaporation, then dry it to a water-free basis in an oven heated to a temperature slightly above the boiling point (about 215 deg. fahr.) until it has reached constant weight, then take a second weight record, and subtract the second weight from the first to determine the weight of the water.

American Society of Heating and Ventilating Engineers Guide, 1930 KING, Thomson* (M 1923), The Peerless Heater Co., Boyertown, Pa.

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