The companies attending (so far) are listed below:
| Abonmarche Consultants, Inc. |
| Arcadis |
| Atwell |
| Bacco Construction Company |
| Canadian National Railway Company |
| Commonwealth Associates Inc. |
| Consumers Energy |
| Danny’s Construction Company, LLC |
| Dashiell Corporation |
| DTE Energy |
| GEI Consultants Inc. |
| Granite Construction Company |
| ISG |
| Keweenaw Research Center – Michigan Technological University |
| Kokosing Industrial/Durocher Marine |
| Krech Ojard & Associates, Inc |
| Newkirk Electric Associates Inc |
| Realtime Utility Engineers, Inc. |
| Rice Engineering, Inc. |
| Road Commission for Oakland County |
| RS&H |
| Ryba Marine Construction Co. |
| SME |
| Spicer Group, Inc. |
| TRC Companies |
| Westwood Professional Services |
| WI DNR Division of Environmental Management |
| Wisconsin Department of Transportation |