Document XpZxE1DELyVNR5gRpLgYxZrK

INSULATION research PLAINTIFF'S, v j^EXHIBIT^gl II "/Vusg43 5 1 February 11* 1958 Mr. A. L. Jones JOPLIN PLANT Rot Substitution of DSO Industrial Whits Plaster for Whits Portland C#umt in One-Cote Cunt Formulation Laboratory tssts have boon completed to dstamine ths snoont of USQ Industrial Whits Flastar which can bo used as a substitute for white portland ohaent in oar Ono-Coto Csaont formulation. Based upon our experience with ths gypeua plaster supplied by Bestmll Certain-Teed, ws node laboratory batch tests in which various degress of substitution were tried, Ths results of these tests show that the USQ Material ean be used to the ease extent as found for ths Bestwall Certain-Teed Material, It would seen reasonable therefore that the proposed fonralation revision Maploylng gppeoa, which we gave in detail In our letter of January 17 1958 addressed to Kr. Christnsr, should work equally as well with the USQ Material, The savings reported for the Bestwall Certain-Teed material should be duplicat ed with ths USQ Material, as their quoted deliwed price is the sane. it the present tins, neither of these gypsou from these two potential suppli ers has been used in plant batches wads in accordance with the rationaided revised fonralation. In the ease of Bestwall Certain-Teed, we have receiv ed 300 lbs, for that purpose and are awaiting word flrtaa the Joplin Plant when sane test betohes ean be wade. In the oaee of the USQ Material, the only Material tested has been the 5 lbs, which wa received for our laboratory evaluation. FLL/s sot Mr. den J. Christnar Mr. L. E. Cook ^ Paul L, Loose 083380 UHR 000226 f* I