Document n9xVaLpbX6R2nNEv77OMGvGX1

fi ) -analytical -analytical walter c mccrone associates inc CONSULTING ULTRAMICROANALYSIS MICROSCOPY SMALL PARTICLE PROBLEMS STATE CHEMISTRY REIVED REIVED 2 March 1977 - owen | 2 Ms. Regina Gallagher oe Bete Johnson & Johnson Company : 501 George Street New Brunswick New Jersey 08901 MAR 1977 GEORGE LEE Dear Ms. Gallagher Using transmission electron microscopy and selected area electron diffraction we have analyzed a sample designated as Sample A. In this material we found extremely platy talc and no asbestiform minerals We did however find some fine inorganic particles which we believe from their electron diffraction patterns to be calcium sulfide This may result from decomposition and sulfidization of dolomite which is a standard procedure in air pollution techniques to trap sulfur from fuels WINDSOR WEEKLY COMPOSITE COMPOSITE / 17 1 77-1 77-12117 If there are any further questions concerning this report or the data contained therein please feel free to contact me Very truly yours GRG ref 2546 Senior Research Physicist 2820 SOUTH MICHIGAN AVENUE CHICAGO ILLINOIS 60616 - 842-7100 CABLE CHEMICRONE JNJ 000264734