Since our founding, HMMH has conducted federally sponsored research and prepared guidance materials for U.S. federal agencies and related offices and programs. These agencies have recognized our outstanding qualifications and have repeatedly retained our services. HMMH has worked with the following:
- Airport Cooperative Research Program (ACRP)
- Department of Energy (DOE)
- Federal Interagency Committee on Aviation Noise (FICAN)
- National Aeronautics and Space Agency (NASA)
- National Cooperative Highway Research Program (NCHRP)
- National Park Service (NPS)
- Partnership for Air Transportation Noise and Emissions Reduction (PARTNER)
- Federal Aviation Administration (FAA)
- Federal Transit Administration (FTA)
- Federal Railroad Administration (FRA)