| # | Firmenname | Rolle | Anzahl der Projekte |
|---|---|---|---|
| 1 | AA Gonzalez Consulting Engineer | Ingenieurgesellschaft | 3 |
| 2 | Abb Randall Engineers/contractors | Ingenieurgesellschaft | 0 |
| 3 | AC Ingénierie Lorraine | Ingenieurgesellschaft | 1 |
| 4 | Action Engineering Consultants | Ingenieurgesellschaft | 1 |
| 5 | Action Geotechnical Consultants | Ingenieurgesellschaft | 0 |
| 6 | Adler Development | Ingenieurgesellschaft | 0 |
| 7 | Adler Engineering Inc | Ingenieurgesellschaft | 1 |
| 8 | Advanced Storage Technology - Ast | Ingenieurgesellschaft | 1 |
| 9 | A E Associates Inc. | Ingenieurgesellschaft | 4 |
| 10 | Affiliated Engineers | Ingenieurgesellschaft | 1 |
| 11 | Agra Earth And Environmental Inc. | Ingenieurgesellschaft | 2 |
| 12 | Agra Earth Environmental Soil Engineer | Ingenieurgesellschaft | 0 |
| 13 | Alan Kropp And Associates | Ingenieurgesellschaft | 2 |
| 14 | Alan R Schwartz | Ingenieurgesellschaft | 1 |
| 15 | Albert B Cook | Ingenieurgesellschaft | 1 |
| 16 | Al Bliss Engineering Inc | Ingenieurgesellschaft | 1 |
| 17 | Alliance Engineering | Ingenieurgesellschaft | 2 |
| 18 | Alliance Land Plan & Eng. | Ingenieurgesellschaft | 2 |
| 19 | Allied Engineering | Ingenieurgesellschaft | 7 |
| 20 | Allwest Geoscience | Ingenieurgesellschaft | 1 |
