Document e1vwjDyo0yv0kxy5M5xm4robg

FILE NAME: Georgia Pacific (GP) DATE: 1975 July 29 DOC#: GP076 DOCUMENT DESCRIPTION: Report - Analysis of Ten Industrial Taping, Spackling and Jointing Compounds ( / July , 2 0 1975 Results of analysis of ten industrial taping, spackling and joint ing compounds. Ten samples, collected from drywall construction sites were analy zed by x-ray diffraction, optical and electron microscopy. The smples were designated and described as follows; 1. USG-A Tape-joint topping compound (for finishing and second coat). U.S. Gypsum Co., Chicago, Illinois 60606, 2. USG-B Jointing and taping compound (for rough work) . U.S. Gypsum Co. 3. USG-C Nuvobond 90 (quick drying taping compound), U.S. Gyp sura Co. 4. USG-D Jointing compound (for~topping and finishing coat). Gypsum Co. 5. USG-E Redimix jointing compound. U.S. Gypsum Co. 6. USG-F Wall board seal. U.S. Gypsum Co. 7. USG-G Drywall taping compound. U.S. Gypsum Co. 8. Spackle A - Manufacturer - Muralo Co., Bayonne, New Jersey. 9. Spackle B - Manufacturer unknown - no brand name. 10. Spackle C - Manufacturer unknown - no brand name. The results of the analyses are presented in Table II. Major com ponents are in capital letters. Substances present in lesser quanti ties are shown in small case letters. Chrysotile asbestos is present in'nine of the ten samples, ranging from 5 to 12%, by weight. Tremolite asbestos was found in one sample. Quartz a major constituent in four samples. 1) USG-A MICA CALCITE DOLOMITE kaolinite chrysotile 5) USG-E PLASTER OF PARIS MICA QUARTZ kaolinite chrysotile 9) SPACKLE B PLASTER OF PARIS QUARTZ mica chrysotile TADLE II 2) USG-B MICA DOLOMITE kaolinite chrysotile 3) USG--C 4) USG-D MICA MICA PLASTER OF PARIS CALCITE calcite DOLOMITE kaolinite kaolinite chrysotile chrysotile 6) USG-F 7) USG-G PLASTER OF PARIS MICA MICA DOLOMITE QUARTZ calcite KAOLINITE tremolite '. chrysotile ` quartz chrysotile 8) SPACKLE A PLASTER OF PARI QUARTZ MICA TALC chyrsotile kaolinite 10) SPACKLE C PLASTER OF, PARIS talc quartz r