aerial image of the six-story, nearly windowless form radiation lab building at Hunters Point in San Francisco, with housing under construction in the background

Shuttered Radiation Lab Poses Ongoing Health Risks for Growing Neighborhood

Our investigative series, “Exposed: The Human Radiation Experiments at Hunters Point,” details how the U.S. Naval Radiological Defense Laboratory, based at a shipyard in San Francisco, exposed at least 1,073 dockworkers, military personnel, lab employees and others to radiation in technical exercises and medical experiments early in the Cold War.

In part 6, we detail how cavalier attitudes toward radiation exposure and an indifference to how pollution left by the Navy might affect San Franciscans have been constants officials warned of plutonium blowing in the air three-quarters of a century ago.

State Commission Gives Green Light to Close SF’s Great Highway to Cars

San Francisco on Thursday received state approval to proceed with closing a 2-mile section of the Great Highway to car traffic as early as spring 2025, and to begin planning a long-term park on that stretch of road. The car-free highway will have separate lanes for pedestrians and cyclists, along with a new continuous bike lane connecting Daly City to Golden Gate Park.

Two men holding large sheets of papers in front of a large shredding machine and trash cans in a black-and-white photo dated 1969 and labeled classified material

Destroyed Records, Dying Witnesses Consign San Francisco Radiation Lab to Obscurity

Our investigative series, “Exposed: The Human Radiation Experiments at Hunters Point,” details how the U.S. Naval Radiological Defense Laboratory, based at a shipyard in San Francisco, exposed at least 1,073 dockworkers, military personnel, lab employees and others to radiation in technical exercises and medical experiments early in the Cold War.

In part 5, we trace the obscure nature of the work at the lab to the military’s culture of secrecy, explore why officials shredded millions of pages of paper records and show how an ongoing lack of official interest in acknowledging this history has frustrated local people dealing with the shipyard’s environmental legacy.

Cold War Scientists Pushed Ethical Boundaries With Radiation Experiments

Our investigative series, “Exposed: The Human Radiation Experiments at Hunters Point,” details how the U.S. Naval Radiological Defense Laboratory, based at a shipyard in San Francisco, exposed at least 1,073 dockworkers, military personnel, lab employees and others to radiation in technical exercises and medical experiments early in the Cold War.

In part 4, we examine the ethical implications of the lab’s use of radioactive substances on humans, when neither scientists nor study participants knew enough about the risks to offer informed consent — and how taking such gambles may have seemed more excusable in an atomic-age context than today.

San Francisco Supervisor Joel Engardio, at Ocean Beach in July for a political event.

Attempt to Recall SF Supervisor Engardio Faces Uphill Battle

An effort is under way to recall District 4 Supervisor Joel Engardio for supporting the closure of a 2-mile section of the Great Highway to cars. Anti-incumbent sentiment persists in San Francisco, but wealthy donors are unlikely to support a recall and would probably back the supervisor financially should he face voters in a special election.

colorized photos of a man lying on his back bare chested, with a man uniform peeling radiation patches off his skin

Human Radiation Studies Included Mock Combat, Skin Tests and a Plan to Inject 49ers

Our investigative series, “Exposed: The Human Radiation Experiments at Hunters Point,” details how the U.S. Naval Radiological Defense Laboratory, based at a shipyard in San Francisco, exposed at least 1,073 dockworkers, military personnel, lab employees and others to radiation in technical exercises and medical experiments early in the Cold War.

In part 3, we show how the lab’s scientific agenda expanded from monitoring workers’ occupational exposures to using radioactive substances in mock atomic combat and clinical experiments that included topical, oral and intravenous administration of potentially harmful isotopes.