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  • US Army Corps of Engineers, Baltimore District.
  • US Army Corps of Engineers, Tulsa District.
  • US Environmental Protection Agency, Headquarters
  • Minerals Management Services of the US Department of Interior
  • US Trade and Development Agency
  • US Navy
  • US Agency for International Development
  • Westinghouse Savannah River Company
  • United Nations Development Program
  • Ministry of Local Government and Rural Development, Bangladesh
  • Petrobangla (Ministry of Energy), Bangladesh
  • International Institute of Education
  • PA Consulting Group
  • Shell Oil Company, Nigeria
  • Lucky Goldstar
  • Daewoo
  • Quality Institute of America
  • Rahimafrooz Batteries Ltd
  • Bangladesh Rural Advancement Committee (BRAC)
  • Arbanassi, Plc.
  • Greenland Garments
  • Applied Ordnance Technology
  • Azola Building Services
  • Other
Quotes from Customers
News in Brief

Tetrahedron is now a GSA Schedule Contractor.

Tetrahedron has assisted US EPA in making their web site Sec. 508 (Rehabilitation Act) compliant.

Tetrahedron has been tasked to implement environmental management system (ISO 14000) for military installation.

Tetrahedron has recieved a contract to support Ft. Bliss, TX with its storm water management system.

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