Home | IL | B | Big Rock | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Petroleum Technology Industry 5s342 Scott Rd Big Rock, IL 60511 Phone : (630) 556-4622 Quad County Steel 9s510 Jones Rd Big Rock, IL 60511 Phone : (630) 556-4600