Dr. Daren Timmons, Board Chair

Dr. Daren Timmons is University of South Carolina- Aiken’s Provost & Executive Vice Chancellor of Academic Affairs. Timmons previously served as Dean of the College of Sciences & Engineering at USC-Aiken.

Before coming to USCA, Timmons was the John C. Allen ’62 Institute Professor of Chemistry and head of the Chemistry Department at Virginia Military Institute in Lexington VA. He received his bachelor of science degree in chemistry from Duke University in Durham NC and his doctorate in chemistry from Texas A&M University in College Station TX. 

Steve Sheetz, Board Vice-Chair

Stephen O. Sheetz is a mechanical engineer from Georgia Tech with over 35 years of experience in the nuclear industry. He was actively involved during the construction and early test operations of the Defense Waste Processing Facility and has supported the Savannah River National laboratory by marketing technologies to the Department of Defense. Steve also supported a multi-lab program called the Advanced Fuel Cycle Initiative/Global Nuclear Energy Partnership.

He retired from SRNL in 2015 and is now providing consulting services on tritium and pit programs for SRNL.  He has also been providing strategic planning support to domestic advanced nuclear reactor teams. 

Steve was a founding member of CNTA and has served on the Board of Directors and chaired the speaker’s bureau. 

Dr. James Marra, Executive Director

Dr. James C. Marra is a veteran in the nuclear industry. He began his nuclear career at the Savannah River National Laboratory (SRNL) as a Senior Engineer and progressed to the level of Advisory Engineer. He also spent time as a Senior Scientist for the U.S. Department of Energy’s Office of Environmental Management (DOE-EM).

Marra has a Bachelor of Science degree in Ceramic Science and Bachelor of Arts degree in Mathematics (Alfred University, Alfred, NY); a Master’s degree in Materials Engineering (Worcester Polytechnic Institute, Worcester, MA); and a Ph.D. in Ceramic and Materials Engineering (Clemson University). 

Charlie Hansen, Treasurer

Charlie Hansen is a retired contractor and federal senior executive who served for 46 years in the Naval Nuclear Propulsion Program, commercial nuclear power generation, and in US Department of Energy (DOE) waste management programs. Most recently he was a Vice President of Parsons Corporation, from 2005-2013, where he was responsible for business development, and project controls and risk management for construction of the Savannah River Site Salt Waste Processing Facility Project (SWPF)

Hansen earned a BS in chemical engineering from Tufts University in 1967. Charlie and his wife, Lyddie, have resided in Aiken since 1998 and are active in their community; they are both avid ballroom dancers. 

Board Members

Dr. Jeff Allender

Jeffrey S. Allender is Advisory Scientist and Program Manager at Savannah River National Laboratory (SRNL). He first joined in 1978 and has since been researching radioactive waste disposal, evaluating geologic repositories for long-term disposal, developing technologies for reactor fuel fabrication and recycling, and materials management. 

He earned a B.S. in Physics from Davidson College and Ph.D. from Cornell. 

Sally Bartelmo

Sally Bartelmo is a Shift Operations Manager in the Saltstone Facility for Savannah River Remediation. Previously, she supported the liquid waste contractor in design, facility and shift engineering in the Tank Farm Facility. She has a Bachelor of Science degree in Civil Engineering from the University of South Carolina.

Roger Burnett

Roger R Burnett is a Chief Project Controls Specialist at Parsons.  Currently he oversees a broad portfolio of environmentally-based contracts nationally and internationally for Parsons. He moved to Aiken, SC in 2010 to support Parsons’ efforts on the Salt Waste Processing Facility at the Savannah River Site. 

He was born and raised outside of Boulder, CO and is a graduate of the University of Colorado. He holds a BS in Business Administration with dual-emphasis in Accounting and Finance.


Dean Campbell

Dean Campbell is the Director of Public Affairs and Project Communications for Savannah River Remediation, the liquid waste contractor at the Savannah River Site (SRS). He focuses on external and internal communications; government affairs at the local, state and federal levels; community relations; and media relations. 

Mr. Campbell joined Westinghouse Savannah River Company in 1989 and has held a number of positions of increasing responsibility in the Public Affairs field at SRS.

Wyatt Clark

Wyatt Clark is the Senior Vice President of Environmental Management Operations for SRNS. He is responsible for the safe execution of all environmental management operations at SRS. 

Clark is a Chemical Engineer with 36 years of experience in the areas of project management, operations, engineering, and maintenance within complex, high-hazard nuclear chemical facilities.

Dr. Paul Cloessner

Paul Cloessner is the Vice President, NNSA Chief Business Officer for Savannah River Nuclear Solutions (SRNS). He is responsible for leadership of the NNSA programs, projects, finance and business services.

Dr. Cloessner received his Bachelor of Science degree in Chemistry from Louisiana State University and his Doctorate in Nuclear Chemistry from The Florida State University.

Dr. Musa Danjaji

Musa Danjaji is a Full Professor of Nuclear Engineering at South Carolina State University (SC State).  He received M.S. and Ph.D. in Nuclear Engineering from the University of Illinois, at Urbana-Champaign. He is a member of the Governor’s Nuclear Advisory Council. He currently serves as the Acting Chair of the Department of Engineering and Academic Program Coordinator for the Nuclear Engineering program at SC State. He is also the Director for the Center of Energy Studies at SC State.

Mark Davis

As the Deputy, Vice President of NNSA Operations and Programs, he is responsible for the Country’s sole source of tritium products supplied to the warfighter. He retired from the Navy in 2017. 

He received his commission through the NROTC program, graduating as the outstanding student in his department from San Diego State University with a Bachelor of Science in Civil Engineering. He received a fellowship to the Massachusetts Institute of Technology, graduating in 1992 with a Master of Science in Ocean Engineering degree.

Alan Dobson

Alan Dobson has worked in the Nuclear Industry since 1975. He has been the Licence Holder/Senior Person Responsible on HLW & Vitrification, Chemical Separation, Uranium & Plutonium Production Facilities and several Waste Treatment Plants, including the Advanced Mixed Waste Treatment Plant in Idaho. He pioneered the use of Behavior Based Safety in the UK Nuclear Industry in 1993.

Alan has a degree in Chemical Engineering and is a Vice President of Bechtel National Inc.

Jhivaun Freeman-Pollard

Ms. Freeman-Pollard is the Project Director, Tank Closure and Regulatory Strategies for Jacobs at Savannah River. She has over 25 years of experience managing nuclear-related projects and programs in the U.S. and internationally.

Ms. Freeman-Pollard has a bachelor’s degree in International Relations Operations and Resource Management from the University of California, Davis, and a Master of Engineering in Construction Engineering from the University of Alabama.


Dara Glass

Dara V. Glass heads up the BWXT Aiken office as regional director, managing daily operations for the company. Ms. Glass directs BWXT’s regional and local community outreach efforts and has been with BWXT for over 10 years.

Prior to BWXT, Ms. Glass worked in economic development for 16 years promoting Commonwealth of Virginia communities to corporate executives around the world, creating jobs and capital investment.

Joyce Hopperton

Joyce Hopperton is Director, Environment, Safety, Health, and Quality Assurance for Centerra – Savannah River Site. Her responsibilities include ensuring that Environment, Safety, Health, and Quality Assurance programs meet the Code of Regulations, Department of Energy Orders, and any other regulatory agency requirements.

Prior to joining Centerra-Savannah River Site, Joyce worked in Health Physics for Commercial Nuclear Power plants. Joyce graduated from the University of North Carolina, Greensboro.

Fred Humes

Fred Humes is President/CEO of the Applied Research Center.  He is Director Emeritus of the Economic Development Partnership which he served for over twenty years.  He is a graduate of the University of Tennessee and holds a M.S. from Troy State University.  Mr. Humes served in the US Air Force as a pilot and staff officer and retired after serving his last assignment at the Pentagon.  Mr. Humes founded and managed several small companies prior to a career in economic development.  Mr. Humes was awarded the South Carolina Order of the Palmetto for his work in economic development

Karl Lutterloh

Karl G. Lutterloh is Vice President and Trust Officer at Security Federal Bank. He is a graduate of the University of South Carolina School of Law and holds a Master of Laws in Taxation from the University of Florida. He is an active member of the South Carolina, Aiken, and Richland County bars as well as the Aiken Young Professionals. 

Dr. Forest Mahan

A native of South Carolina, Forest E. Mahan has spent more than 20 years in the South Carolina Technical College System. He is currently the 5th president at Aiken Technical College.

Mahan received a bachelor’s degree in history from the College of Charleston and a master’s degree in history and a Ph.D. in higher educational administration from the University of South Carolina.

Jesus "Zeus" Mancilla

Jesús “Zeus” Mancilla, PE is the Deputy Manager, K Area Complex Nuclear & Criticality Safety Engineering, SRS. He provides overall direction and oversite of facility operations to ensure compliance with the safety envelopes while executing Department of Energy directives.

Zeus received a BS from Caltech in Chemical Engineering. Processing experience includes Plutonium, Uranium, and Neptunium.  He switched to Operations after 23 years of increasing responsibility in Engineering, is now very much enjoying the change of pace. 

Matthew McCoy

Matthew McCoy is a Shift Operations Manager with Savannah River Remediation, supporting the Saltstone Project. He has also worked as a shift technical engineer supporting the liquid waste disposal mission. He is a former Nuclear Submarine Officer with experience in nuclear power plant operations and management. He is a graduate of the U.S. Naval Academy. 

Craig McMullin

Craig W. McMullin has more than 40 years of experience in the commercial nuclear power industry and at various Department of Energy (DOE) site locations. He retired in 2019 as a Senior Program Manager of Special Projects at the Savannah River National Laboratory (SRNL) for Savannah River Nuclear Solutions (SRNS), LLC.

Mr. McMullin is a graduate of the Massachusetts Maritime Academy with a Bachelor of Science degree in Marine Engineering. He also received a Master of Business Administration from Western New England College.

Nick Miller

Nick Miller is currently the Facility Manager for the H-Canyon and HB-Line Facilities, unique production-scale actinide-recovery chemical separations facilities located at the Department of Energy’s Savannah River Site. He is responsible for the overall safe operation of the facilities while meeting DOE nonproliferation and environmental cleanup missions and directives. 

Miller has 20 years of project, engineering, and operations management experience including oversight of facilities supporting the Refueling and Complex Overhaul (RCOH) of A4W Nimitz-Class Aircraft Carriers in Newport News, Virginia. He holds a BS in Mechanical Engineering and an MBA from Virginia Tech.

Chuck Munns

Charles L. Munns is a Commissioner at the South Carolina Commission for Higher Education. Currently the President of Munns Advisement, LLC, Admiral Munns was President and Chief Executive Officer of Savannah River Nuclear Solutions from 2007 through 2009. Previously he served for 34 years in the US Navy attaining the rank of Vice Admiral. 

Admiral Munns received his Bachelor of Science degree from the US Naval Academy, his Master of Science, Computer Science degree from the University of Colorado, and his Corporate Board Directors Continuum Certificate from the University of Chicago School of Business.

Dr. John Veldman

John Veldman retired as Associate Laboratory Director for National and Homeland Security at SRNL after 38 years of service. John served as Chief Engineer on the Integrated Leadership Team for the NNSA Modern Pit Facility. John was appointed manager of Technology Business Development at Savannah River Technology Center, the predecessor of SRNL. He has held many management positions throughout his career.

He received B.S., M.E., and Dr. of Engineering degrees in Mechanical Engineering from Rensselaer Polytechnic Institute, Troy NY. 

Dr. James Corley, Ex-Officio

James H. Corley is Associate Professor in the Department of Radiology at Georgia Health Sciences University Medical College of Georgia (MCG). He received B.S. and M.S. degrees from the University of Georgia, and is Board Certified in Nuclear Pharmacy.

Prior to joining MCG in 1990, Jim served at the Walter Reed Army Medical Center and was Deputy Chief of Nuclear Medicine Service at the Eisenhower Army Medical Center at Fort Gordon. He is an Honors Graduate of the U.S. Army Command & General Staff College, and has authored numerous papers in the Nuclear Medicine field. 

Walt Joseph, Ex-Officio

Walt Joseph is a graduate Mechanical Engineer with a BE degree from North Carolina State College and a MS from the Pennsylvania State University. He served as an officer in the US Army Ordinance Corps in Korea during the conflict.

He was employed for 39 years at the Savannah River Site in a variety of technical and management positions for E.I. Du Pont and the Westinghouse Savannah River Co. He started at the Savannah River Laboratory doing research and development before he transferred to the Savannah River Plant for varied assignments including managing the Traffic and Transportation Department, the L-Reactor restart project, and Site Quality.

Dr. Clint Wolfe, Director Emeritus

Clinton R. Wolfe served as CNTA Executive Director from 2008 through 2015. He obtained B.S. in Chemistry degree from Marshall University and a Ph.D. in Chemistry from the University of New Mexico, with a combined minor in Math and Physics. He worked at the Los Alamos Scientific Laboratory then participated in research and problem-solving for 12 years at the Westinghouse R&D Center.

Dr. Wolfe led research for ten years on nuclear steam generator corrosion issues at the Westinghouse Service Technology Division. In 1988, he joined Westinghouse Savannah River Company (WSRC), where he managed the Strategic Materials Technology Department in the Savannah River National Laboratory (SRNL) from 1996 until his retirement in 2005. 

Dr. Allison Hamilton Molnar, Director of Operations

Dr. Allison Hamilton Molnar has been involved with local governments and non-profit work since high school. At CNTA she organizes events, is the point of contact for members, provides payroll and accounting services, and works behind the scenes so CNTA can function efficiently. She also currently serves as CNTA’s webmaster.

Prior to joining us, Allison was a professor of Political Science at USC-Aiken. She is active in the Aiken community, serving on the Board of Directors for the Cumbee Center, and volunteering with FOTAS.

She received her Master’s and PhD in Political Science from the University of Iowa, a Master’s Degree in Applied Politics from the University of Akron, and attended Grand Valley State University for her bachelor’s degrees.