0000950136-04-001812 8-A12G 3 20040601 BHA GROUP INC 0000801128 3564 431416730 DE 0930 8-A12G 34 000-15045 04842233 8800 E 63RD ST KANSAS CITY MO 64133 8163568400 8800 E 63RD STREET KANSAS CITY MO 64133 8-A12G 1 file001.txt REGISTRATION OF SECURITIES; SECTION 12(G) EX-99.1 2 file002.txt AMEND. NO.1 TO RIGHTS AGREEMENT EX-99.2 3 file003.txt AMEND. NO.2 TO RIGHTS AGREEMENT