0001255561-06-000007 4 1 20060508 20060509 20060509 AAON INC 0000824142 3585 870448736 NV 1231 2425 SOUTH YUKON TULSA OK 74107 9185832266 2425 SOUTH YUKON TULSA OK 74107 DIAMOND HEAD RESOURCES INC 19900808 SHEFFIELD KATHY I 0001211652 4 34 000-18953 06821034 302 EAST THIRD STREET OWASSO OK 74055-2828 4 1 primary_doc.xml PRIMARY DOCUMENT