, * * , r< < v ...i^*,.w'V,^ V i.' $ .` ; ` >* .' ` & V .*'.

0- Su'T oo(Hoc>o'7 *0<3*A) er 5^-619 ftw Chief, hgwu of Biipo Sot Coauaodar, Boston Inal Shipyard 2 9 MAY 1958 MJt Asbestos eetallia, eyathstle rubber severed patotsi of sapply of Ml () BiTSazro Bat spdltr $38 PHjbd lll-L-80393-58 of 81 Na/ 1998 <b) HO.

PLAINTIFF'S EXHIBIT CdS-SW f* > fV $'4?

Confidential J Mellon Institute of Industrial Research Univkhsity of Pittsburgh PROGRESS REPORT for the_weekended____ January 10, 1942 I~~L'cT?

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IHF-584 > -i;

INDUSTRIAL HEALTH FOUNDATION EXHIBIT LIST Exhibit Number Date IHF- 0001 350115 IHF- 0002 IHF- 0003 IHF- 0004 350130 361204 361208 IHF- 0005 IHF- 0006 IHF- 0007 IHF- 0008 IHF- 0009 IHF- 0010 IHF- 0011 IHF- 0012 IHF- 0013 IHF- 0014 371100 390100 390124 390124 390124 390223 390224 390323 390422 390427 IHF- 0015 IHF- 0016 390608 390608 IHF- 0017 IHF- 0018 IHF- 0019 IHF- 0020 390713 390800 391100 400418 IHF- 0021 IHF- 0022 IHF- 0023 IHF- 0024 400400 400400 400500 401113 IHF- 0025 IHF- 0026 IHF- 0027 410800 410900 410915 Description Letter dated Jan. 22, 1935, to M.

y^lunru'lf. ) 'tijf &i <* ~h>v rnu{MGinor\,o5/5 ab&rc,c~fe 1 65 itrial Hi f * I I \\ itI t -i - rr Mellow ipraTiTtrrK, PrrrsnuRaii, Pa

26 Am.

110 Am.

Hoffman Specialty Co.

Hoffman Specialty Co.

"'I [ MEB1CM SOOETYOF AMONG & AMERICAN SOQETIOF HEATING & YENTIIATIN6 ENGINEERS 6HDE19S TABLE 12.

AMERICAN SOCIETYOF HEATING & HHS) YENT1LAT1W6ENGINEERSGDH)EJ9g3^ If it is desired to figure on a basis of the number of air changes the expression would be N Wp X Jh in which N = Number of air changes Wp = Window crack perimeter /h = Infiltration per hour per lineal foot of cracks C = Cubical contents The crack perimeter of a double hung window is four times the height, and three times the width of the lower sash.

'AMERICAN SOOETY(ff BEffllNfi & TA B LE 70.