Today in 1974, Karen Silkwood’s car was apparently forced off a quiet highway in western Oklahoma, where it crashed into a culvert, instantly killing her. Silkwood was employed as a technician at Kerr-McGee Nuclear Corporation’s plutonium fuel rod fabrication plant in Cimarron.
Silkwood was on her way to meet with a New York Times reporter and an Oil, Chemical, and Atomic Workers union official to discuss safety concerns and blow the whistle on Kerr-McGee by sharing falsified quality control records for fuel rods manufactured at the Cimarron facility.
From 1970-75, workers at Cimarron mixed two metric tons of weapons-grade plutonium with uranium and placed it in 19,000 stainless steel fuel rods for the Fast Flux Test Facility reactor at the Hanford Reservation. In 1974, the AEC discovered about 40 pounds of Pu-239 was missing.
A few days before she died, someone from Kerr-McGee deliberately contaminated Silkwood’s apartment with plutonium—a material she did not work with at the Cimarron facility. She and her roommates were also under continuous company surveillance.
In 2014, Kerr-McGee agreed to pay $5.15 billion to settle a lawsuit about its failure to obey environmental laws at two dozen heavily-contaminated sites across the United States—the largest fine ever levied by the US government to enforce such laws. justice.gov/opa/pr/united-…
In 1984, the Supreme Court ruled 5 to 4 that Silkwood’s estate was entitled to $10 million in punitive damages from Kerr-McGee which was awarded in a jury trial in 1979. In 1986, after the Supreme Court refused to intervene a second time, Kerr-McGee settled for $1.38 million.
Silkwood’s story is told in the 1983 film “Silkwood,” adapted from Howard Kohn’s 1981 book. It was nominated for five Academy Awards, incl. best actress (Meryl Streep), best supporting actress (Cher), best screenplay (Norah Ephron & Alice Arlen), and best director (Mike Nichols).
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Today in 1963 at 10:24am CST—as 3 workers moved partially-disassembled high-explosive assemblies from retired B7 bombs into storage igloo 572 at the Medina Modification Center near San Antonio, Texas (one of six original AEC nuclear stockpile sites)—one assembly caught fire.
Seeing the fire, the civilian workers—Louis Ehlinger, Sr. (below), Hilary Huser, and Floyd Lutz—immediately ran for cover. About 45 seconds later, 123,000 pounds of chemical high explosives in the 209 assemblies in the igloo exploded. Miraculously, no one was seriously injured.
The blast dug out a 20-foot-deep, 120-foot-wide crater and dispersed natural and depleted uranium in the assemblies stored in the igloo. The shockwave broke windows 12 miles away in downtown San Antonio and was heard at least 50 miles away. Families living next to the base fled.
Today in 1971, the United States conducted its largest-ever underground nuclear test. A Spartan antiballistic missile carrying a W71 warhead was lowered into a 7-foot-wide, 5,873-foot-deep shaft beneath Amchitka Island, Alaska, and detonated. The yield was about 5 Megatons.
The test went ahead only hours after the Supreme Court refused requests to delay it over the Nixon administration’s failure to issue a comprehensive environmental impact statement. Instead, the court agreed with the admin’s claim any delay would upset the “balance of deterrence.”
Here is some incredible official footage of the preparations for and results of that huge explosion. I have seen many nuclear test films over the years, and even though Cannikin was entirely underground, this one never fails to send chills down my spine.
OTD 60 yrs ago, the United States conducted Tightrope—its last fully atmospheric nuclear test—as part of Operation Fishbowl. A Nike Hercules SAM was fired 69,000 feet into the sky, where its W31 warhead exploded 2 miles SSW of Johnston Island with a reported yield of 10 kilotons.
Subsequent US tests that took place in the atmosphere included Operation Roller Coaster: four joint US-UK zero-yield plutonium dispersal safety tests (Double Tracks, Clean Slate I, Clean Slate II, and Clean Slate III) conducted at the Nevada Test Site from May 15 to June 9, 1963.
There were also 4 Project Plowshare “peaceful nuclear explosion” excavation experiments in Nevada that deliberately breached the surface:
Palanquin—April 14, 1965; 4.3kt
Cabriolet—January 26, 1968; 2.3kt
Buggy—March 12, 1968; 5 simultaneous 1.08kt
Schooner—December 8, 1968; 30kt
Today in 1958—Election Day—a B-47 bomber carrying one unspecified sealed-pit thermonuclear gravity bomb became engulfed in flames on takeoff and crashed from 1,500 feet on private land about 4.5 miles SW of Dyess AFB, near Abilene, Texas. Three crewmen ejected, one was killed.
An explosion of one or more of the assisted-takeoff rockets attached to the fuselage caused the fire. The bomb’s conventional high explosives detonated in the crash—the B-47 was “literally blown to bits” per a local reporter—leaving a crater 35 ft. in diameter and 6 ft. deep.
The thermonuclear secondary was damaged but recovered intact, as was the tritium reservoir, which was leaking. The USAF publicly insisted there was “no harmful contamination,” although that wasn’t true. It only fully cleaned up residual uranium and lead contamination in 2011.
Today in 2000, Congress passed and President Clinton signed the Energy Employees Occupational Illness Compensation Act, providing much-needed compensation and medical benefits to people who mined/milled/transported uranium for nuclear weapons or who built/tested/maintained them.
To date, EEOICPA has provided $22,210,866,602 to 135,658 current/former workers diagnosed w/a radiogenic cancer, chronic beryllium disease, beryllium sensitivity, or chronic silicosis resulting from exposure to radiation, beryllium, or silica while employed at covered facilities.
A related law, the 1990 Radiation Exposure Compensation Act—which was will expire in June 2024—has provided $2,582,749,306 to 40,011 nuclear test site and uranium workers for radiation-related illnesses linked to their jobs. Another 13,557 have had claims denied.
Today in 1966, this small announcement of a new federal construction contract appeared in the Baltimore Sun. It probably didn't attract much attention, but the facility it referenced would go onto become an integral part of the US government’s plans to survive a nuclear war.
Built and operated by the Federal Reserve Bank of Richmond, Virginia, and dedicated on December 10, 1969, the bunker inside Mount Pony, about 70 miles SW of Washington, DC, served as the central hub for all electronic funds transfers in America. But it also had a secret function.
From December 1969 until 1988, the Federal Reserve stored several billion dollars of shrink-wrapped currency—incl. for awhile a large number of $2 bills—in a 23,500 sq. ft. vault in this 139,800 sq. ft. radiation-hardened building. The money was in 9-foot high stacks on pallets.