Document ppXVq4Z2n35L797R7zX0gLr3E

MATERIAL SO* 7309 HEAT ISSULATBJO.BLOCK, FOR USE ONLY BY - Sout^.'hiladel December 5, 1934 31 FURBISHED BYe)Ehret' Magnesium Valley Forge, Pa* b) Johns-Uanville Philadelphia, Fa* . o)Keasbey d)n Hniip ler. Pa* elphia, Pa* KOTB: Suppliers listed no prefereaoe iadieated. ORDER FROM SUPPLIER AS Bleaks ) ) giving site Blocks ) andshape lo. 12 Blocks ) CHARACTERISTICS oeks made of diatemaoeous earth, asbestos and together having high temperaturs resisting pro] red heat insulating value* Standard sixes are 3" SB", flat or curved and l/2" to 4" thick* AFFUCATIQR, ion for steam turtftaes and steaa piping, for tempej to 1200 deg* Pahr* SPECIFY TICK AS - HEAT IHSUU3M0 BLOCK #7309 ion,see Material* Sec.,HP*Bng*Dept*, East * w**ba; 1 PLAINTIFF'S [ mt EXHIBIT 000068l8