Heating Ventilating Air Conditioning Guide 1939 fan will be capable of delivering air against pressures that may not have been foresee during the design of the duct system.

Heating Ventilating Air Conditioning Guide 1939 lating brine over the coil as shown in Fig. 11.

In the Index to Modern Equipment are com plete detailed listings of heating, ventilating and air conditioning equipment and materials.

Officers and List of Chapters, 1938-39--(Continued) Western Michigan Headquarters, Grand Rapids, Mich.

CHAPTER 5 19S8;Gwdes Fig. 4.

Johns-Maiwiile = Twenty-Two East Fortieth Street New York.N.Y. . ssi .

47i> Tto'ttty-sfcoud Cattyrcss--Xatiotial Safety Council and t<> the m<<<raliiY tr^pivw and assistance t ihwe called qwi to contribute their thought, lime and effort t<> pnmv4c such a commendable cause as the con- MTvatiict *f human liie anil limb. awl desiring t rccoptitc cadi and-every * in a projxT and fitting manner.

J.951 *1U kh4 * t Ft4 ~u t. im C, tud B^S 4 U -J2 Ar Pneumoconiosis Due to Diatomaceous Earth.

PLAINTIFF'S EXHIBIT >b X 1 * -v f * ' ??

r iHouim July 26, 19U fir, K.

'LAINTIFF'S EXHIBIT * tmnutwT m rwmo Zaatltuto : Iaduatrial MHlelat NEW YORX UNIVERSITY . oatucz or wrxcxt iwmiun ia ttunvc wsnru. ktdtcu. gxik) 411 mrr hwt. w tax u. *.t.

1938 - Med.

1930 TRANSACTIONS OF THE National Safety Council NINETEENTH ANNUAL SAFETY CONGRESS VOLUME X v Pittsburgh September *9 -- October 3, 1930 William Penn and Fort Pitt Hotels Copyright, igji, Notional Safety Council P L A IN T IF F 'S I CONTENTS PAGE Council Officers and Directors.............................................. . 3 Council Purposes and Policies.................................................................................... * 7 General Sessions-- Annual Meeting of Members.............. ............................................................ - 11 Annual Banquet ............................. ............................-.... ....................................... 33 A B C--General Round Table........................................................................... 39 Advanced Safety Engineering.................................... 65 Pennsylvania Dajr-- (a) Community Safety..............................................................

822 OCCUPATIONAL TUMORS AND ALLIED DISEASES Hirsch, O., Wien. med.

122 INDUSTRIAL HYGIENE AND OCCUPATIONAL MEDICINE the determination of quartz to warrant discussion.