IHMM Directors and Officers are volunteers who serve without pay. They may serve up to two, four-year terms. Directors are responsible for the governance of IHMM, including establishing the overall direction of IHMM, the appointment of Executive Director, policy-making, and financial management.
Officers
![Bill Diesslin_Pic1](https://ihmm.org/wp-content/uploads/2020/04/Bill-Diesslin_Pic1.jpg)
William M. Diesslin, CHMM
Chair
Mr. Diesslin is the Director of the Iowa State University Department of Environmental Health and Safety in Ames, Iowa. He was elected as a Director in 2016. Second term expires 12/31/2024. Bill’s bio is here.
At-Large Director
![Melissa Hamer Bailey Pic](https://ihmm.org/wp-content/uploads/2021/12/Melissa-Hamer-Bailey-Pic-150x150.jpg)
Melissa A. Hamer, Esq. CHMM
Vice Chair
Ms. Hamer is an attorney practicing environmental law in Indiana. She was elected as a Director in 2019. 1st term expires 12/31/2027.
At-Large Director
![JuneBrockCarrollPic](https://ihmm.org/wp-content/uploads/2020/04/JuneBrockCarrollPic-150x150.jpg)
June Brock-Carroll, CHMP
Secretary
Mrs. Brock-Carroll is the Research Safety Hazardous Materials Manager at Clemson University in South Carolina. She was elected as a Director in 2017. Second term expires 12/31/2025. June’s bio is here.
CHMP Director
![JanRosenbergPic](https://ihmm.org/wp-content/uploads/2020/04/JanRosenbergPic.jpg)
Jan G. Rosenberg, CSHM
Treasurer
Mr. Rosenberg is a consultant and former Deputy Administrator of the State of Nevada’s Division of Industrial Relations with a focus on OSHA enforcement and compliance. He came on the Board in 2019. Second term expires 12/31/2026. Jan’s bio is here.
CSHM Director
Directors
![Morgan Hyson](https://ihmm.org/wp-content/uploads/2021/02/Morgan-Hyson.jpg)
Public Member – W. Morgan Hyson. Morgan was elected in 2020 for a 4-year term that ends 12/31/2024. Morgan is a former staff member at IHMM who now works at the State Department. Morgan’s bio is here.
Public Member Director
![dan blankfeld](https://ihmm.org/wp-content/uploads/2022/09/dan-blankfeld.png)
Daniel S. Blankfeld, CSMP, CSHM
Mr. Blankfeld is Vice President of Safety, GIC Madison / CBG Building Company of Silver Spring, Maryland. First term expires 12/31/2023. Dan’s bio is here.
CSMP Director
![ivan schmelczer](https://ihmm.org/wp-content/uploads/2022/12/ivan-schmelczer-150x150.jpg)
Ivan Schmelczer, CDGP
Ivan has a company group in two countries: Trans-DGT Central Europe in Czech Republic and Trans-DGT Hungary in Hungary. In these companies he organizes trainings and exams in DG transport, and does consultation service. First term expires 12/31/2026. Here is Ivan’s bio.
CDGP Director
![](https://ihmm.org/wp-content/uploads/2024/04/Erika-W-Headshot.png)
Erika Winning, CHMM
Ms. Winning is a Regional EHS Manager at Rust-Oleum Corporation. In her role she focuses on waste reduction, employee training, and EHS compliance. She currently holds her CHMM & CSHM credentials through IHMM. Her first term on the board expires on 12/31/2026. Erika’s bio here.