- ASME/American Society of Mechanical Engineers
- AIChE/American Institute of Chemical Engineers
- Society of Petroleum Engineers
- Journal of Petroleum Science and Engineering
- GasificationTechnologies Council
- Powder/Bulk Solids – The Source for Dry Processing and Bulk Handling Technology
- Powder Bulk Solids – HEC Moves Engineering and Corporate Offices to IN Facility
- Powder Bulk Solids – Heumann Environmental Announces $6 Million Fertilizer Orders
- HEC Consolidates Operations into Jeffersonville Facility