“……….The Santa Susana Field Laboratory was a sprawling industrial research complex located on over 2,000 acres of rocky hillside in Simi Valley, California. Widely recognized as being one of America’s most vital facilities during the space race, scientists from NASA, Boeing, and Rocketdyne contributed significantly in developing the following projects for the US government.

• Engines for the Atlas Intercontinental Ballistic Missile (ICBM).
• The Engine for Explorer 1, America’s first satellite.
• The F-1 engine that powered the Apollo booster.

And…

• The world’s first sodium nuclear reactor — which experienced a meltdown dubbed one of the worst radioactive disasters in US history.

Worst in US history?

Most Americans know about Three Mile Island, the 1979 meltdown which brought anti-nuclear politics into the mainstream and resulted in worldwide outrage. But how many have heard of the 1959 Rocketdyne Meltdown?

It’s Rocketdyne.

Residents had tremendous pride for the facility. To them, it represented a greater purpose that most Americans only connected with by way of television reports and radio broadcasts. Locals businesses fed Rocketdyne workers, washed their clothes, repaired their cars, and built their homes. They were helping their country with its most important goals: defeating the Soviets and sending men to the moon.

The reactor that leaked in 1959 was located in an area of SSFL dubbed “Sector IV”, which was classified as experimental and given lax environmental restrictions. This allowed engineers to speedily build the reactor, but with a deadly tradeoff: it had no containment structures. The reactor and its highly radioactive components were housed without the large concrete domes that surround modern power reactors.

When the meltdown occurred, a decision was made by higher-ups to downplay the incident. Engineers were told to run the reactor as normal over the next few days. As it became more and more obvious that radiation was spreading throughout the surrounds hills and communities, the plug was pulled. A few weeks later, Atomics International released a memo alerting residents of a “slight mishap” with their reactor, and that no dangerous radiation was released.

Employees at SSFL were directed not to tell anyone about the incident, and it was not publicly disclosed for 20 years, until 1979. A series of academic and journalistic reports between 1989–2010 helped to reveal the true scale of the disaster. Testifying before Congress in 2008, Daniel Hirsch, President of an NGO dedicated to nuclear safety, referred to the meltdown as “one of the worst accidents in nuclear history.”

Subsequent reports revealed other toxic decisions Boeing made at SSFL. Instead of safely shipping hazardous materials to a licensed facility, workers shot barrels of the toxic chemicals with rifles and dumped the waste into nearby streams. This has led to multiple ongoing studies on the groundwater quality of the area, including an expensive multi-billion dollar legal battle between Boeing and local governments over a cleanup agreement. …….

Aside from the high levels of radiation in the soil and crumbling infrastructure, the site has pretty intense security. From my online conversations with the few people who managed to sneak in, the process is grueling: requiring a 6-mile hike in and out which almost necessitates overnight camping at the site.