PRINTED CIRCUIT WITH SUBSTRATE OF AN OXYBENZOYL POLYESTER

AMOCO CORPORATION, A CORP. OF IN

from DART INDUSTRIES INC., A CORP. OF DE

ASSIGNMENT OF ASSIGNORS INTEREST. Recorded 1988-06-28

KENNECOTT CORPORATION

from BEAR CREEK MINING COMPANY, BEAR TOOTH MINING COMPANY, CARBORUNDUM COMPANY, THE, CHASE BRASS & COPPER CO., INCORPORATED, FLAMBEAU MINING CORPORATION, KENNECOTT EXPLORATION, INC., KENNECOTT REFINING CORPORATION, KENNECOTT SALES CORPORATION, OZARK LEAD COMPANY, RIDGE MINING CORPORATION

MERGER NEW YORK EFFECTIVE DEC. 31, 1980. Recorded 1987-06-25

KENNECOTT MINING CORPORATION

from KENNECOTT CORPORATION

CHANGE OF NAME EFFECTIVE DEC. 31, 1986. (SEE DOCUMENT FOR DETAILS) Recorded 1987-06-25

STEMCOR CORPORATION, 200 PUBLIC SQUARE, CLEVELAND, OHIO 44114 A DE. CORP.

from KENNECOTT MINING CORPORATION

ASSIGNMENT OF ASSIGNORS INTEREST. Recorded 1987-06-25