1 EXHIBIT 99.01 EASTMAN CHEMICAL COMPANY AND SUBSIDIARIES SUPPLEMENTAL OPERATING SEGMENT INFORMATION 1998 CHANGE FROM 1997 FOURTH QUARTER TWELVE MONTHS % CHANGE % CHANGE SALES OPER. (1) SALES OPER. (1) REVENUE EARNINGS REVENUE EARNINGS ===================================================================================================== SPECIALTY & PERFORMANCE SEGMENT (6)% (74)% (5)% (21)% ===================================================================================================== Products primarily included: Specialty plastics (2) (6)% - 0% ++ Performance chemicals (15)% -- (12)% -- Fine chemicals 7% ++ (1)% -- Fibers (3)% -- (9)% -- Coatings, inks & resins (10)% -- (5)% -- ===================================================================================================== CORE PLASTICS SEGMENT (14)% (26)% -% 57% ===================================================================================================== Products primarily included: Container plastics (13)% -- 5% ++ Flexible plastics (2) (17)% -- (17)% -- ===================================================================================================== CHEMICAL INTERMEDIATES SEGMENT (21)% (58)% (8)% (20)% ===================================================================================================== ===================================================================================================== TOTAL EASTMAN (10)% (106)% (4)% (14)% ===================================================================================================== (1) 0 = Change of approximately 0 - 2% (+ or -) + = Increase of approximately 2 - 10% ++ = Increase of greater than 10% - = Decrease of approximately 2 - 10% -- = Decrease of greater than 10% Sm = Negligible change in dollar amount Nm = Not meaningful (2) The 1997 amounts have been reclassified to conform to the 1998 presentation, which is prepared in accordance with SFAS No. 131, "Disclosures about Segments of an Enterprise and Related Information." 115