Practitioners
The Team
Senior specialists with direct experience across the U.S. nuclear enterprise — national laboratories, federal oversight, DOE/NNSA sites, and industry — and complementary energy and communications infrastructure.
Dr. John Abrefah
Nuclear Safety & Materials · Former DNFSB / PNNL
Retired technical staff of the Defense Nuclear Facilities Safety Board, with prior Pacific Northwest National Laboratory work in spent nuclear fuel and materials. Deep background in nuclear materials behavior, safety analysis, and independent oversight of DOE nuclear facilities.
Dr. Erfan Ibrahim
Nuclear Engineering · Cyber & Energy Systems
Nuclear engineering and energy systems specialist with experience spanning national laboratory, EPRI, and industry. His work centers on advanced nuclear systems, cyber-physical security for energy infrastructure, and the integration of nuclear generation with modern grid and digital systems.
Dr. Paul Giesting
Environmental Geoscience · Uranium Geochemistry · Pantex
Senior Environmental Specialist at the Pantex Plant (DOE/NNSA). Practice in uranium geochemistry and mineralogy, soil and groundwater assessment, contaminant transport, and remediation at nuclear sites.
Joseph Barnell
Energy & Communications Infrastructure · Wireless Broadband
Managing Director, Barnell Technologies. Telecommunications and wireless broadband strategy, RF/IP infrastructure, municipal and rural broadband, and infrastructure project development complementary to nuclear and energy systems work.
Additional credentials are available upon request.