0001047469-07-008880 S-8 3 20071109 20071109 20071109 STEEL DYNAMICS INC 0001022671 3312 351929476 IN 1231 S-8 33 333-147271 071231228 6714 POINTE INVERNESS WAY SUITE 200 FORT WAYNE IN 46804 2604593553 6714 POINTE INVERNESS WAY SUITE 200 FORT WAYNE IN 46804 S-8 1 a2180886zs-8.htm S-8 EX-5.1 2 a2180886zex-5_1.htm EXHIBIT 5.1 EX-23.1 3 a2180886zex-23_1.htm EXHIBIT 23.1