Main Office - Detroit, Michigan 21850 Greenfield Road Oak Park, MI. 48237 (248) 967-4600 - Main Switchboard (248) 967-4640 - Fax Sales & Marketing:                                        or Call John Eaton at (248) 397-7134 Employment Opportunities:   Prequalification Help:                                           or Call Peter Schreiber at (248) 397-7105 Map and Directions to our office Satellite Office - Chicago, Illinois Dennis McNeil, RRC, CCS 2060 Ridge Road Homewood, Illinois 60430 (708) 799-3599 - Phone (708) 799-3837 - Fax Email: