| | Sharp Testing Services (Toledo, OH) Laboratories: asphalt & aggregate testing | |
| | Sherry Laboratories Inc (Muncie, IN) Testing: laboratories; metallurgical, materials, microbiological & environmental testing services | |
| | Southeastern Testing Lab (Bishop, GA) Testing laboratories: electrical safety equipment | |
| | Southwest Research Institute (Warner Robins, GA) Research & development laboratories | |
| | Standard Laboratories Inc (Cresson, PA) Coal, water & clay testing laboratories | |
| | Staveley Services North Amer (Atlanta, GA) Environmental testing laboratories | |
| | TCS Design & Management Svcs (Warner Robins, GA) Electronic & mechanical testing laboratories | |
| | Thomson Consumer Electronics (Lancaster, PA) Commercial research & development laboratories | |
| | Ultra Laboratories Inc (Cleveland, OH) Testing laboratories | |
| | Universal Engineering Sciences (Rockledge, FL) Commercial testing laboratories: soil, concrete & asphalt | |
| | KYSOR Panel Systems (Fort Worth, TX) | |
| | Dayton T. Brown, Inc. (Bohemia, NY) | |
