- Oscar Orduno, Inc.
- Irving, Texas
- International Drilling Equipment, Inc.
- Rural Hall, North Carolina
- MB Drilling Foundations
- Weston, Florida
- American Pile Driving Equipment
- Conroe, TX
- Bechtel
- Houston, TX
- Casagrande Group
- Fontanafredda, Italy
- Drex Corporation
- Maspeth, NY
- Cajun Industries, LLC
- Baton Rouge, LA
- STA
- Milano, Italy