696 CHAPTER 31 1952, Guide -dampers and other fire protective details, see Pamphlet No. 90 of the Nationai Board of Fire Underwriters.0 The recommended gages for steel (or iron) and aluminum sheet metal rectangular ducts are given in Table 8.

706 CHAPTER 32 1952 Guide i ... 2.

738 CHAPTER 33 1952 Guide range is extended appreciably beyond that of the conventional cyclone.

808 CHAPTER 36 1952 Guide l- the absorber.

644- CHAPTER 29 1953 iGuidel movement' of the plug is transmitted by means of a lever to a pencil or marker' which records the flow on a graduated strip chart.

.830 CHAPTER 37 1953 Guide operation upon a difference in pressure between the inside of the cylinder and the suction or discharge line.

930 CHAPTER 43 1953 Guide Table 4.

1002 CHAPTER 47 ( 1953 Guide Fiber saturation point is the moisture content of cellular materials (wood, etc.) > at which the cell walls are completely saturated while the cavities are liquid-free.

1044 CHAPTER 48 1953 Guide Report on Relative Performance of Air Filters, by Mechanical Division, Association of American Rail roads, January 16. 1038.

/ Confidential Mellon Institute of Industrial Researc University of Pittsburgh PLAINTIFF'S EXHIBIT PROGRESS REPORT for the weekended March 4. 1959 AIR HYDIINT FOUNDATION Subjects under which report is to be indexed .Industrial Fellowship No. 259-4 3 copies mode: 1 - Mellon Institute 2 - Air Hygiene fi]e Three companies renewed membership in the Foundation during the week.

GRAVIMETRIC DUST SAMPLING GRAVIMETRIC DUST SAMPLING -- FUNDAMENTAL CONCEPTS AND PRINCIPLES* L.R.

PLAINTIFF'S (| EXHIBIT I WV-03923 P,ao,S48 file Manager, Australian Blue Asbestos Ltd., mmssiLMsoz- bear Sir, 16til April, 1952.

OF THB PSI3ICA1 SZiBIHAKOSS AMO X-t036?

The Saranac Laboratory F.r th.

PLAINTIFFS j EXHIBIT i OOl^Koo Hr# Kay 19, 1954 Bunt Counting Equipment Hr.