AMERICAN SOCIETYOF BEATM & VENTILAim EN6INEERS6DIDE.I923 than two-thirds than that of the latter, and there is no inverted cone at the top to direct the flow of the exhaust outward.

American Society of Heating and Ventilating Engineers Guide, 1924-25 manufacturer; third, for the quality and kind of fuel furnished; fourth, for the proper design of the heating plant when designed by a con sulting engineer; fifth, for the proper operation of the plant according to the instructions of the heating contractor and the boiler manufacturer.

American Society of Heating and Ventilating Engineers Guide, 1924-25 investigation the following problems have thus far been studied, at the Research Laboratory and complete reports will be found in the Society's Journal: 1.

American Society of Heating and Ventilating Engineers Guide, 1925-26 > American Society of Heating and Ventilating Engineers Guide, 1925-26 Note.

American Society of Heating and Ventilating Engineers Guide, 1925-26 LOG SHEET NO. 4 Date....................................... .........................

American Society of Heating and' Ventilating Engineers Guide, 1925-26 the type; some of the stationary ventilators have smaller, and others have larger outlet area than some cowl ventilators of the same nominal size.

CANCERS OF THE RESPIRATORY SYSTEM 437 fact that the exposure time essential for the production of this disease seems to be not less'than ten years (Martineck).

354 INDUSTRIAL HYGIENE AND OCCUPATIONAL MEDICINE commissions looked at the German system and exclaimed, "We can never hope to have so efficient an administration"; then they went to England and copied the British plan!

CONVERSION TABLE FOR GASES AND VAPORS- {Milligrams per Liter to Parte per Million and Vice Versa; SS C. and 760 mm.

29 i blown off dumps and roads made from the mine tailings.

104 CHAPTER 4 years, 40 percent of all workers in a Griesheimer chemical plant (where chromium sulfate and other industrial chemicals were pro duced) had developed lung cancer.

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and other lead pigments, get in touch with us about your requirements.