Segment detail is summarized as follows (in thousands): Engine Industrial Corporate & Total Products Products Unallocated Company 2001 Net sales $606,810 $530,205 $ – $1,137,015 Depreciation and  amortization 23,100 11,268 4,209 38,577 Equity earnings in  unconsolidated  affiliates 3,017 – – 3,017 Earnings before  income taxes 49,539 72,891 (17,502) 104,928 Assets 315,706 228,505 162,619 706,830 Equity investments in  unconsolidated  affiliates 14,115 – – 14,115 Capital expenditures,  net of acquired  businesses 23,308 11,370 4,246 38,924 2000 Net sales $673,982 $418,312 $ – $1,092,294 Depreciation and  amortization 20,959 8,509 4,858 34,326 Equity earnings in  unconsolidated  affiliates 4,392 – – 4,392 Earnings before  income taxes 57,453 53,862 (10,982) 100,333 Assets 320,805 172,837 183,883 677,525 Equity investments in  unconsolidated  affiliates 13,600 – – 13,600 Capital expenditures,  net of acquired  businesses 22,236 9,028 5,153 36,417 1999 Net sales $611,378 $332,761 $ – $ 944,139 Depreciation and  amortization 18,486 7,506 1,694 27,686 Equity earnings in  unconsolidated  affiliates 3,610 – – 3,610 Earnings before  income taxes 61,896 36,373 (9,059) 89,210 Assets 327,035 160,201 55,010 542,246 Equity investments in  unconsolidated  affiliates 13,833 – – 13,833 Capital expenditures,  net of acquired  businesses 19,723 8,008 1,808 29,539 (In thousands) 2001 2000 1999 Engine Product segment: Off-road products $ 181,795 $ 193,229 $181,200 Transportation products 79,670 151,950 162,291 Aftermarket products 345,345 328,803 267,887 Total Engine Product  segment 606,810 673,982 611,378 Industrial Product segment: Dust collection products 217,343 193,119 153,480 Gas turbine products 195,042 117,038 84,229 Special application products 117,820 108,155 95,052 Total Industrial Product  segment 530,205 418,312 332,761 Total company $1,137,015 $1,092,294 $944,139 Property, Plant &  Net Sales Equipment – Net 2001 United States $ 711,268 $138,631 Europe 211,397 36,801 Asia-Pacific 185,395 19,609 Other 28,955 12,617 Total $1,137,015 $207,658 2000 United States $ 688,899 $135,480 Europe 206,429 37,698 Asia-Pacific 166,221 22,304 Other 30,745 9,063 Total $1,092,294 $204,545 1999 United States $ 616,254 $122,513 Europe 166,431 28,616 Asia-Pacific 138,453 21,911 Other 23,001 9,140 Total $ 944,139 $182,180 Following are net sales by product within the Engine Products segment and Industrial Products segment: Geographic sales by origination and property, plant and equipment (in thousands): Sales to one customer accounted for 12 percent of  net sales in 2001. There were no sales over 10 percent of net sales to any customer in 2000. Sales to one customer accounted for 11 percent of net sales in 1999. 29