Computer Training, Professional and Management Development Training

All Other Specialty Trade Contractors, All Other Rubber Product Manufacturing, Commercial, Industrial, and Institutional Electric Lighting Fixture Manufacturing, Sporting and Athletic Goods Manufacturing, Sporting and Recreational Goods and Supplies Merchant Wholesalers

All Other Specialty Trade Contractors, Engineering Services, All Other Support Services

All Other Specialty Trade Contractors, Engineering Services, Drafting Services, Building Inspection Services, Administrative Management and General Management Consulting Services

Custom Computer Programming Services, Computer Systems Design Services, Other Computer Related Services, Temporary Help Services, Professional Employer Organizations

Piece Goods, Notions, and Other Dry Goods Merchant Wholesalers, Men's and Boys' Clothing and Furnishings Merchant Wholesalers, General Warehousing and Storage, Other Warehousing and Storage, Industrial Design Services

Recyclable Material Merchant Wholesalers, Other Chemical and Allied Products Merchant Wholesalers, Pipeline Transportation of Natural Gas, General Warehousing and Storage, Other Warehousing and Storage

Machine Shops, Computer and Computer Peripheral Equipment and Software Merchant Wholesalers, Stationery and Office Supplies Merchant Wholesalers, General Warehousing and Storage, Wired Telecommunications Carriers

CHEMCARE INC.

Data Processing, Hosting, and Related Services, Other Accounting Services, Engineering Services, Custom Computer Programming Services, Computer Systems Design Services

Tax Preparation Services, Payroll Services, Other Accounting Services, All Other Support Services

Commercial and Institutional Building Construction, Plumbing, Heating, and Air-Conditioning Contractors, Environmental Consulting Services, Other Services to Buildings and Dwellings, Remediation Services

Custom Computer Programming Services, Computer Systems Design Services, Other Computer Related Services, Administrative Management and General Management Consulting Services, Other Management Consulting Services

ALLIED WASTE SERVICES OF PITTSBURGH

All Other Information Services, Savings Institutions, Other Depository Credit Intermediation, Financial Transactions Processing, Reserve, and Clearinghouse Activities, Other Activities Related to Credit Intermediation

Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers, Temporary Help Services, Offices of All Other Miscellaneous Health Practitioners, All Other Miscellaneous Ambulatory Health Care Services

Industrial Building Construction, Commercial and Institutional Building Construction, All Other Specialty Trade Contractors, Building Inspection Services, Administrative Management and General Management Consulting Services

AMEC - ECC JOINT VENTURE

AMEC-ERRG JV

Other Accounting Services, Engineering Services, Custom Computer Programming Services, Other Computer Related Services, Administrative Management and General Management Consulting Services