0001026608-02-000028 8-K 1 20020730 5 7 20020822 AAON INC 0000824142 3585 870448736 NV 1231 8-K 34 000-18953 02745179 2425 SOUTH YUKON TULSA OK 74107 9185832266 2425 SOUTH YUKON TULSA OK 74107 DIAMOND HEAD RESOURCES INC 19900808 8-K 1 aaon_8k182002.txt FORM 8-K