KENNAMETAL INC.  / AR 2002 57 Segment detail (continued) (in thousands)  2002 2001 2000 Operating income (loss):  MSSG $ 97,323 $ 130,558 $ 131,676 AMSG 26,781 43,270 41,204 J&L (681) 3,689 17,208 FSS 2,014 7,541 12,021 Corporate (34,120) (28,658) (43,330) Total operating income 91,317 156,400 158,779 Interest expense 32,627 50,381 55,079 Other (income) expense, net (361) 11,690 3,289 Income before income taxes and minority interest $ 59,051 $ 94,329 $ 100,411 Depreciation and amortization:  MSSG $ 51,897 $ 62,374 $ 64,727 AMSG 12,065 21,024 21,892 J&L 2,398 8,400 9,044 FSS 1,852 804 342 Corporate 5,417 4,695 5,641 Total depreciation and amortization $ 73,629 $ 97,297 $ 101,646 Equity income (loss):  MSSG $ 629 $ 470 $ 615 AMSG (16) (15) (18) Total equity income $ 613 $ 455 $ 597 Total assets:  MSSG $ 738,654 $ 937,863 $ 978,188  AMSG 361,122 429,981 475,741  J&L 178,728 224,939 218,247  FSS 56,078 63,056 69,435  Corporate 189,029 169,603 199,510  Total assets $1,523,611 $1,825,442 $1,941,121 Capital expenditures:  MSSG $ 26,257 $ 32,913 $ 35,125  AMSG 8,168 7,947 7,235  J&L 2,537 2,679 6,939  FSS 437 439 760  Corporate 6,641 15,951 604  Total capital expenditures $ 44,040 $ 59,929 $ 50,663  Investments in affiliated companies:  MSSG $ 8,354 $ 3,688 $ 3,006  AMSG 3,327 187 (435)  Total investments in affiliated companies $ 11,681 $ 3,875 $ 2,571  During 2002, all operating segments experienced lower operating income as a result of reduced sales levels as compared to the prior year. Additionally, MSSG and AMSG operating income was reduced  by $10.2 million and $8.0 million, respectively, in restructuring charges associated with the closing  and consolidation of various facilities (see Note 12). The operating income for J&L and FSS reflects $10.1 million and $0.6 million, respectively, in charges related to those segments’ business improve- ment programs and $1.0 million of restructuring charges were included in the corporate operating loss (see Note 12). Total assets of both MSSG and AMSG are lower due to the effects of the goodwill impairment charges of $170.7 million and $82.1 million, respectively, recognized in 2002 (see Note 2). J&L operating income for 2001 was reduced by $5.0 million related to restructuring and asset impairment charges, $3.0 million related to product pruning initiatives (see Note 12), and $2.1 million of costs primarily related to the tender offer to acquire the minority shares of JLK (see Note 3). MSSG, AMSG, FSS and Corporate operating income for 2001 was reduced by $3.3 million, $0.9 million, $0.6 million and $0.4 million, respectively, related to restructuring charges (see Note 12).