June 20. 197H 13LOOD LEVELS OF RFIF IN S]ZLECTED EMPLOYEES: Beginning in 1976 we began to sample selected 3M employees to determine the amount of organic fluorine (R-F')and inorganic fluoride (F) in their blood.

PoLLITION CONTROL POLLUTION CONTROL Cimon bron ECABHONE - Apri 2 1979 Waste Solution Sotght Cont'd Clipping from MEGAPHONE - Apri.[ 2, 197 9 -------------------------- .

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CorrpoorsrateOOcccaupations Medias 25M1CC7eo3nte4r2,3bB0uidiTngetgho2n0e-305 1733 068 Fax AR226-0473 3M 5a.t PChoytstiacgieanGrPolvanet(S19u7m8m-a19r9y1)Reports Regarding Medical Surveillance Program Following reports of the finding of organic fluorine in sera samples, a fluorocheical medical surveillance program began at 3M manufacturing facilities in the mid 1970s "The surveillance program has generally consisted of annual or biannual tests ofclinical chemistries, pulmonary function, blood counts and abiomoritoroffluorochemical + exposure.

AR 226 -- 0873 ACUTE TOXICITY TO FISH (MUMMICHOG) IEsTsuBsTANCE 000000 Identity: ArefmeirxrteudrteocaosntPaiFnOiSng, pFeCr-f9l5u,oroorocatsanaescuolmfponoanteen,twohficFhC-m7a8y0Ba.lso(1b-e Octanesulfonic acid) (CAS # 2795-39-3).

nc-oio-j CHRONIC TOXICITY TO EARLY LIFE STAGE OF FISH TEST SUBSTANCE Identity: Perfluorooctanesulfonate; may also be referred to as 14C78.02, PFOS or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-, potassium salt, CAS #2795-39-3) Remarks field: The test substance is a white powder.

fm -o o ^ i BIODEGRADATION F 7 ^J5 - TEST SUBSTANCE Identity: Perfluorooctanesulfonate, DEA salt; may also be referred to as PFOS DEA salt, FC-99, or 3M Sample No. 2. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-, compd. with 2,2'-iminobis[ethanol] (1:1), CAS # 70225-14-8) Remarks: Test sample is a mixture of the test substance in water (approximately 25% test substance and 75% water).

AR 226-035 SUMMARY OF HISTOPATHOLOGICAL EXAMINATIONS OF FATHEAD MINNOW (Pimephales promelas) EXPOSED TO 78.01 FOR 30 DAYS. p M - 3 V'Z"*-' RESEARCH REPORT SUBMITTED TO 3M COMPANY ST.

h AIW-oHii BIOSEARCH, INC.

ft R W 6 - O M H 5 SrtduAfoud BIO-TEST laJymJjwM,, She. 1810 F R O N T A G E R O A D N O R TH B R O O K .

27-CV-10-28862 CONFIDENTIAL Filed in Fourth Judicial District Court 11/17/2017 6:15 PM Hennepin County, MN Transcript of Michael Santoro 10 (3 7 to 4 0 ) Conducted on September 15, 2017 37 39 1 baseline operatingtemperatures are 1100 F, 590 C inthe 1 Q.

CorporateHealth Physics Corporate OccupationalMedicine Corporate ProductResponsibility Corporate Toxicology 3M MedicalDepartment 3M Center,220-2E-02 PO Box 33220 St Paul,MN 55133-3220 651733 1110 An Epidemiologic Investigationof ClinicalChemistries,Hematology and Hormones in Relation to Serum Levels of PerfluorooctaneSulfonateinMale Fluorochemical Production Employees Following reportsof the findingof organicfluorineinserasamples,a fluorochemical medical surveillancperogram began at3Ms Decatur manufacturingfacilitiynthe late 1970's.The surveillancperogram has generallyconsistedofannual or biannualtestsof clinicaclhemistriesp,ulmonary function,blood countsand a biomonitorof fluorochemicalexposure.

ACUTE TOXICITY TO INVERTEBRATES TEST SUBSTANCE (GRASS SHRIMP) Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may alsobe referredtoas PFOS, FC-95, oras a component ofFC-206 or L3243. (1-Octanesulfoniacid)(CAS # 2795-39-3).

ACUTE TOXICITY TO FISH (BLUEGILL SUNFISH) TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may alsobe referredtoas PFOS, FC-95, or as a component of FC-780B. (1Octanesulfoniaccid)(CAS # 2795-39-3).

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