Sulgiye Park

Senior Scientist

Sulgiye Park is a Senior Scientist in the Global Security Program at the Union of Concerned Scientists.

Media Contact

Her work focuses on the front and back end of the nuclear fuel cycle, monitoring and verifying nuclear activities, and analyzing fissile nuclear materials stockpiles.

Before joining UCS, Dr. Park worked as a research scientist at the Stanford Doerr School of Sustainability, where she looked at rare-earth metal supply chain issues in the US. She was also a MacArthur and Stanton Nuclear Security Fellow at Stanford University’s Center for International Security and Cooperation (CISAC), where her research focused on: analyzing geological resources, including uranium and critical metal resources, in North Korea; and radioactive waste management. She published multiple papers on North Korea’s uranium mining and milling processes for disarmament and nonproliferation efforts.

Dr. Park Sulgiye holds a Ph.D. in n Geological Sciences from Stanford University, where her thesis work involved characterization of nuclear and earth materials under extreme conditions.

Selected Publications

Sulgiye Park, Terry McNulty, Rodney C. Ewing. Critical metal resources in Democratic People’s Republic of Korea. International Geology Reviews. 1-21. (2023)

Sulgiye Park & Rodney C. Ewing. US Legal and Regulatory Framework for Nuclear Waste from Present and Advanced Reactors and Their Fuel Cycles. Annual Review of Environment and Resources (2023).

Sulgiye Park, Rodney C. Ewing, Terry McNulty, Allison Puiccioni. Assessing uranium ore processing activities at Pyongsan, Democratic People’s Republic of Korea, using satellite imagery. Science and Global Security, 29(3): 111-144 (2021)

Sulgiye Park, Allison Puccioni, Cameron L. Tracy, Elliot Serbin, Rodney C. Ewing. Geologic analysis of the Democratic People’s Republic of Korea’s Uranium Resources and Mines. Science and Global Security, 28(2): 89-118 (2020)