0001026608-99-000058 10-Q 2 19990630 19990813 AAON INC 0000824142 3585 870448736 NV 1231 10-Q 34 000-18953 99689065 900 PETROLEUM CLUB BUILDING 601 SOUTH BOULDER TULSA OK 74119-1300 9185832266 2425 SOUTH YUKON 2425 SOUTH YUKON TULSA OK 74107 DIAMOND HEAD RESOURCES INC 19900808 10-Q 1 000102660899000058-001-seq1-10-q.txt FORM 10-Q EX-27 2 000102660899000058-002-seq2-ex-27.txt