0000950131-99-000577 424B5 1 19990204 ONEOK INC /NEW/ 0001039684 4923 731520922 OK 1231 424B5 33 333-62279 99520567 100 WEST 5TH ST TULSA OK 74103 9185887000 100 WEST 5TH ST TULSA OK 74103 WAI INC 19970519 424B5 1 000095013199000577-001-seq1-424b5.txt PROSPECTUS SUPPLEMENT