0001125282-04-001912 10-Q 7 20040331 20040504 STEEL DYNAMICS INC 0001022671 3312 351929476 IN 1231 10-Q 34 000-21719 04777949 6714 POINTE INVERNESS WAY SUITE 200 FORT WAYNE IN 46804 2604593553 6714 POINTE INVERNESS WAY SUITE 200 FORT WAYNE IN 46804 10-Q 1 b331695_10q.htm QUARTERLY REPORT GRAPHIC 2 emptybox.gif GRAPHIC GRAPHIC 3 tickedbox.gif GRAPHIC EX-31.1 4 b331695ex31_1.htm CHIEF EXECUTIVE OFFICER CERTIFICATION EX-31.2 5 b331695ex31_2.htm PRINCIPAL FINANCIAL OFFICER CERTIFICATION EX-32.1 6 b331695ex32_1.htm CHIEF EXECUTIVE OFFICER CERTIFICATION EX-32.2 7 b331695ex32_2.htm PRINCIPAL FINANCIAL OFFICER CERTIFICATION