Boilers Spencer Heater Company Division of Lycoming Manufacturing Company Makers of Spencer Heaters Williamsport, Pa.

November 30> 1959 TO: All Sales Managers All Salesmen GENERAL SALES BULLEYIN CC: MESSRS.

PLAINTIFF'S EXHIBIT BiiS TWALL GYPSUM COMPANY ftrdmore October 27g 1958 Paoli Laboratory 1-Sr* J.

C hapter 1 Table 6.

344 CHAPTER 14 1950 Guide adapted to flat flames, or to conical flames that can be spread over the floor of the combustion chamber.

378 CHAPTER 15 , .1950: Guide ' ' Radiant heaters axe required to have a radiant efficiency of not less than 28 per cent.

566 CHAPTER 26 . ' 1950 Guide fitting : standard, and, for 300 lb steel flanges and flanged fittings, than those shown-in the regular American Standards.

706 CHAPTER 33 1950 Guide force upon specially shaped blades of an exhauster wheel,' and then conveyed through a dust circuit in the fan casing to the dust storage hopper. 4.

*56 CHAPTER 40 1950 Guide Sound Control 857 Fig. 6.

910 CHAPTER 44 1950 Guide involved that a detailed treatment is beyond the scope of this chapter.

978 CHAPTER 48 1950 Guide Table 1.

198 CHAPTER 9 1951 Guide Table 14.

650 CHAPTER 30 1951 Guide condition whereby two high velocity jets are created along the sides of the duct, or the air spills immediately downward into the occupied zone (see C Fig. 7). 5.

.696 CHAPTER 32 1951.

872 CHAPTER 40 1951 Guide Sound Control 873 Fig. 2.