Document revVxM50Kk0XyRjpndpRNRqOe

4 January 18, 1991 M. Toelle Alder Evaluation of Product Produced From MP Claims We evaluated 200 mesh product made from HP Claims ore and compared it to standard Beaverhead, Mineralogically the ore is very similar and about 2 points lower in brightness. We believe, if this material is typical, it can be used to replace Beaverhead in industrial products at a 30-50% replacement level. Edward F. McCarthy EFM/kmp J, Buettner M. Lorang Toetle P L A IN T IF F S EXHIBIT CAM-307 ITA-Ratcliff-000022 # Industrial Minerals Cyprus Technical Center 8985 East Nichols Suite 300 Englewood, Colorado 80112 303- 643-5000 Ed McCa r th y DECEMBER 1 2 , 1990 PROJECT MO. 90-511 s u b j e c t s COMPARISON OF MP CLAIMS AND BEAVERHEAD TALCS A sample o f $leanfaite p r o c e s s e d from Beaverhead t a l c and a sample from th e MP claims were evaluated for mineralogy. Results are listed in the table below. STEMMTE M i ne r a 1o g y Talc Chlorite D o lo m ite Magnesite Quartz Am phibole Chrysotile 14.51 2.5 i .5 1 0.5 ID ID L 0 I 10000 6.01 MP CLAIMS 96Z 2 2 0.2 ID SB 5.7% ccs Gordon Gill ITA-Ratcliff-000023 * Comparison of Products Color (GEB) Particle Size (Granulometer) Median (microns) +64 Microns (%) - 4 Microns {%) Fired Color * Steawhite 88.5 10.fi 1.7 17.9 48 MP Claims 200 Mesh 86.5 11.5 4.5 14.3 46 * Steatite 80% talc, 10% EPK, 10% BaC03 fired to 1200C 50/50 blend gave a color of 47 Toelle ITA-Ratcliff-000024