Manufacturing and Distribution
- Certainteed Corporation
- Lukens Steel Company
- R&B Corporation
Chemicals
- ICI Americas Inc.
- Quantum Chemical Corporation
- Quantum Performance Films
Computing Services
- SAP
Environmental
- R. F. Weston Inc.
Insurance
- Reliance Standard Life Insurance Company
Pharmaceuticals
- SmithKline Beecham
- AstraZeneca
Municipal Land Management
- Philadelphia Land Bank
- Philadelphia Redevelopment Authority
Telecommunications and Networking
- AT&T
- ATX Communications
Transportation
- Consolidated Rail Corporation (Conrail)
- Amtrak
Energy
- AmeriGas
- UGI Corporation
Health Care
- Hospital of the University of Pennsylvania
Industrial Services
- International Service Systems