FAS

Injecting Polonium into Humans

12.12.06 | 1 min read | Text by Steven Aftergood

The apparent murder of former Russian intelligence officer Alexander Litvinenko through polonium poisoning seemed like an outlandish innovation in crime. But it was not the first time that polonium had been deliberately administered to human subjects.

In 1944 at the University of Rochester in New York, “tracer amounts of radioactive polonium-210 were injected into four hospitalized humans and ingested by a fifth,” according to a 1995 retrospective account (pdf).

Four men and one women who were already suffering from a variety of cancers reportedly volunteered for the dangerous experiment. One patient died from his cancer six days after the injection.

See “Polonium Human-Injection Experiments,” Los Alamos Science, Number 23, 1995.

That polonium article appeared as a sidebar in a larger paper called “The Human Plutonium Injection Experiments” (pdf) by William Moss and Roger Eckhardt, which follows on the work of reporter Eileen Welsome, builds on the declassification activities of Energy Secretary Hazel O’Leary, and complements the research of the Advisory Committee on Human Radiation Experiments. See the Moss and Eckhardt paper from Los Alamos Science here.

Polonium was classified in July 1945, the authors note, and given the code name “postum.”

The basic chemistry and physics of polonium were declassified in 1946. The fact that polonium-210 was used in nuclear weapon initiators was declassified in 1967, according to a Department of Energy historical account.

publications
See all publications
Clean Energy
Blog
Energy Dominance (Already) Starts at the DOE

DOE is already very well set up to pursue an energy dominance agenda for America. There’s simply no need to waste time conducting a large-scale agency reorganization.

02.05.25 | 7 min read
read more
Government Capacity
Press release
Federation of American Scientists and Environmental Policy Innovation Center Unveil Permitting Tech and Talent Policy Recommendations to Support Deployment of Crucial Energy, Environmental, and Infrastructure Projects

FAS today released permitting policy recommendations to improve talent and technology in the federal permitting process. These recommendations will address the sometimes years-long bottlenecks that prevent implementation of crucial projects, from energy to transportation.

02.05.25 | 4 min read
read more
Government Capacity
Report
Solutions for an Efficient and Effective Federal Permitting Workforce

The United States faces urgent challenges related to aging infrastructure, vulnerable energy systems, and economic competitiveness. But the permitting workforce is unprepared to implement changes. Here’s how they can improve.

02.04.25 | 14 min read
read more
Environment
Press release
Position on S.325 – establishing the National Integrated Heat Health Information System

S.325 would establish a clear, sustained federal governance structure for extreme heat by bringing all responsible agencies together to coordinate planning, preparedness, and response, a key recommendation of FAS’ 2025 Heat Policy Agenda.

02.04.25 | 1 min read
read more