TO: Interoffice Communication FROM: DATE: SUBJ: Distribution TG6TJt: ERT: XF: AJ0: RP T.

TO: Distribution Interoffice Communication FROM: DATE: SUBJ: T.

Interoffice Communication TO: FROM: DATE: RE: Tom Grumbles Mary Ann Fisher June 12, 1991 Merger Update VIS1A On December 13, 1990, Vista Chemical Company ("Vista") entered into an Agreement and Plan of Merger with RWE-DEA Aktiengesellschaft fur Mineraloel und Chemie ("RWE-DEA") and Alpha Acquisition Corp.

Vista Chemical Company 900 Threadneedle Houston, Texas 77079-2990 (713) 588-3000 P.O.

Master Exhibit List 112017,00 1 Date: ... :....

AR226-3046 Study Title Skin Irritation Test with H-21953 in Rabbits Laboratory Project ID Haskell laboratory Report No. 790-96 Author Tracy A.

rfotm c tiwbifl M.

4 joiim r kkucr JEROME H.

VliB Qwwied Cowpaiy Lon uunv umko nor* Old Spanish Trafl, P O.

CM CHEWCAL MANUFACTURERS ASSOCIATION A Bd 91 November 20, 1991 Dear Vinyl Chloride Research Coordinators: Otto Wong et. al. recently published the enclosed article entitled, "An Industry-Wide Epidemiologic Study of Vinyl Chloride Workers, 1942-1982."

TO: R.

TO: R.

, ft.

To: 0.

CRISTOBALITE CAS No: 14464-46-1 RTECS No: VV7325000 UN No: EC No: Crystalline silica, cristobalite Crystalline silicon dioxide, cristobalite SiO2 Molecular mass: 60.1 TYPES OF HAZARD/ EXPOSURE FIRE ACUTE HAZARDS/SYMPTOMS Not combustible.