Document XRBBmx9jnLXOJpVvENMn4Ex6K

I 4^ Laboratory Report Cyprus Industrial Minarais Company RETORT NOu 4790-Agbestos REFERENCES: Bay Street KEY: ENVIRONMENTAL '. OATE OF REPORT: June 16, 1975 DATE OF WORK REQUEST/BY: 1/25/75-H.T. MulryartOPiES: H. T. Mulryan, M. F. Warner T. Baak A. P. Gentsch, L. D. Murino, H. Scholtz J. D. Mulryan, J. Feiger, T. Baak, c. J. Parmentier CLASSIFICATION: d . L. Harris, H. Scholtz STATUS: COMPLETE subject-. Samples from Bay Street marked C400, Lot 211, C500, Lot 209, Ml39, Lot 709, T076, Lot 116, F128, Lot 712, and Furnace Creek Lot 213. objective: X-ray diffraction was used for asbestos detection. RESULTS : Sample_______________ % Tremolite , Ml39 Lot 709 0.1% C500 Lot 209__________ 0.2% All other sanles N.D. CONCLUSION; Only two of the samples showed traces of asbestos by X-ray diffraction. HS/amv 75 Laboratory Report Cyprus Industrial Minerals Company REPORT NO_- Lf.(iso REFERENCES: KEY: _ ^r/^T/3--DATE OF REPORT: fb / ^ ^ lA DATE OF WORK REQUEST/BY: REPORTEO BY: 0 Mxf^TtVW, TAP, ri^ C S f LA^ICHIO; APPROVEO BY: G~~STATUS: (}>+} su^JuoL C W A t t l l , G. S-&C m , M /39 7 ?? To 76 M /(Q} ^MA-wO-CJdfc Cj\JsJ(Lt ^ tjUkzdMw: ^ /39 C I 7(^f <3. / 0.it G a L o ^ x *cbtutihtf. -f oii^ ^ ^ . CYPRUS 76 Laboratory Report Cyprus Industrial Minerals Company REPORT NOj I KEY: 4790 A s b e s t o s ENVIRONMENTAL REFERENCES: K e e le r OATE OF REPORT: June 16, 1975 DATE OF WORK REQUEST/BY: REPORTED BY: STATUS: 1/25/75-H. T. Mulryarf0P|E$: H. T. Mulryan, M. F. Warner, T. Baak A. P. Gentsch, T. Baak, _ ,,vi*. h . scnoitz Murino, J. Felger, J. D. Mulryan, D. L. Harris, CLASSIFICATION: H. S c h O lt* C. J. Parmentier COMPLETE SUBJECT: OBJECTIVE: Samples from Keeler marked HG055, Lot 117K, HG055, Lot 121K, HG075, Lot 119K, HG075, Lot 120, M139, Lot 11BK, HMR29, Lot 555K, C400, Lot 552K, Trinity Superfine, Lot 554K, Sierrawhite IR, Lot 556K, and Sierralite, Lot 551K. X-ray diffraction was run on all samples for asbestos indications. RESULTS : Samples______________ Tremollte HG075 Lot 119K 0.1% M139 Lot 118 0.3% All other samples N.D. CONCLUSION: Only two samples showed asbestos traces by X-ray diffraction. H S/am v CYPRUS 77 Laboratory Repon Cyprus Industri! Minarais Company REPORT NO.: li 7 9 0 C U J U iX m REFERENCES: KEY: DATE OF REPORT*- /Vt^rhr.ZmtjA copies:DATE OF WORK RE0UEST/8Y ?s" 9REPORTED BY: APPROVED BY: CLASSIFICATION: STATUS: SUBJECT: /i/., H60 7 ssmmr-ft H/kl b x F i ie i srrK, C WO /*t u, Kj T ^ Ju .Jw a m ^ U l I % I s u , tot dwiMc ^ T' / . : X a c L ^ . o I ^ tA j i L ~ ~ x y M ( U m . < y ^ o j J 'f a - ' Q l a W ^ X H X--- civ*.Qcxjtjub-- (<UajJJj) fi 4 - f(co *\ i a l i n i - Yi IfKu+JrUs-&>J% 0.}% A^Jy^cL 'fd Q a Im ^X-O v -'jl c t L v / x y i ^ c p u n UNITED SIERRA DIVISION CYPRUS M INES CORPORATION T R E N T O N . N.J. o a e o e REPORT NO.: 7790-10. J02Y : ` Warm Springs Beaverhead DATE OF REPOR.7*!^^^" Micrographs REFERENCES: DATE OF WORK REQUEST/BY: Verbal TB COPIES: TB, DLH, CJP REPORTED BY: C.J. Parmentier APPROVED BY: STATUS: SUBJECT: T. Baak CLASSIFICATION: Confidential Pending . Beaverhead/Warm Springs Talc OBJECTIVE: Prepare Electron Micrographs for comparison study SUMMARY: Three different grinds of subject talcs were micrographed at 10,000 x and 50,000 x. Warm Springs Beaverhead Crude Warm Springs crude Beaverhead crude Lab IR-1183 325 mesh C-400 Lot 1028 Cascade Vapor ' Warm Springs ultra fine Beaverhead vapor ultra fine (Mistron Superfrost) (Mistron Star) The main difference between Warm Springs and Beaverhead talc was the presence of acicular particles on all Warm Springs* samples. CJP:sfs 79 Laboratory Report Cyprus Industrial Minarais Company REPORT NO.: 4790-asbestos KEY: Environmental DATE OF REPORT:: 9/4/75 OATE OF WORK REQUEST/BY: HTM REPORTED "BY: H. Scholtz BY: status: Complete REFERENCES: COPIES: HTM, APG, MFW, CRM, ' ROL, DFK, JDM, HS, TB, AND CJP CLASSIFICATION: SUBJECT: Eleven talc samples from Bay Street. See attached sheet for sample identification. objective: X-ray diffraction for tremolite. RESULTS: See attached sheet. CONCLUSION: All samples are below the 0.5% tremolite specification. H. Scholtz HS :cp .1 CYPRUS SO Attachment for Laboratory Report No: 4790-asbestos Date of Report 9/4/75 Sample Bay Street Lot # % Tremolite T-0 76 M. Frost 128 Mistron MSC M. Frost 128 T-076 T-076 C400 C400 Panamint Crude Panamint Crude Panamint Crude 731 732 733 734 735 736 242 243 Car *10711 Car #126150 Car #108106 0.2 ND ND ND ND ND ND ND ND ND ND TO: H.T. MULRXAN FROM: P. COLVILLE SUBJECT: -76-0127-CIM-BS DATE: May 10, 1976 Report # 1 on Blanket Request Two samples designated 336 B and 337 B were received and analyzed by X-ray diffraction by D.L. Harris with the following results: 336 b Talc with minor dolomite, very minor calcite and Mica, trace of chlorite. Tremolite was not detected. (<.1%) 337 b Talc with minor dolomite, very minor calcite and mica, trace of quartz, and chlorite. Tre molite probably -- 1%. This determination is very marginal and based on a slight rise in background where the tremolite peak occurs. Our detection level is .1% and this tremolite is barely detected. Dr. Harris submitted these two lots to C.J. Pannentier for TEM photographs. Microscope observations confirm the X-ray data. P. COLVILLE PC/bb cc: ESA, GSB, RCCr PC \ 82 Laboratory Report Cyprus Research Company was Maurya u m WWt Los Angelas. CaMomia TMptX 213)478-0482 FWngNo. 76 -0 1 2 7 -CIM -B S R ilrtncn: Kay: Talc - R.T. Vanderbilt Date of Raport: 5 / 0 4 / 7 6 Data of Wortc Raquaat /By: 4 / 2 9 / 7 6 / H . T . M U L R Y A N Copias: RapoitadBy: C J P Approval By: PC Classification: C C C Status: SU P P LE M E N T TO 7 6 - 0 1 2 7 - C IM - D . L . H A R R IS Sutiaei: SEM of C-400 and C-500 Special Blend Talcs o>)activa: To prepare micrographs which illustrate each talc sample morphology, and illustrate mineral fibers if present. Foreword:Two talc samples were submitted by Dr. D. L. Harris, along with a copy of the attached work order. The samples were received labled as special blends of C400 and C-500, lot numbers 336 B and 337 B respect ively. i These samples were prepared for scanning electron mi croscopy (SEM) by mixing a few milligrams of talc in ultrapure deionized water and dispersing with ultra sonic energy. A measured aliquot of the resultant dispersion was then applied to a SEM specimen stub, dried, and coated with a vacuum evaporated, thin layer of metal. SEM examination followed at magnifications ranging from. 100 x to 10,000 x. PLAINTIFFS EXHIBIT CAM -20 83