By late 1960, when the U.S. Atomic Energy Commission authorized plans to build a Molten Salt Reactor Experiment (MSRE) at Oak Ridge National Laboratory, the lab already had about 13 years of experimentation with molten salt reactors under its longest-serving lab director, Alvin Weinberg. The MSRE operated from 1965 to 1969, proving that molten salt reactors could operate reliably, and with alternatives to uranium-235 too.

On the eve of the 80th anniversary of the first controlled nuclear chain reaction, Nuclear Newswire is back with the second of three prepared #ThrowbackThursday posts of CP-1 coverage from past issues of Nuclear News.

On November 17, we surveyed the events of 1942 leading up to the construction of Chicago Pile-1, an assemblage of graphite bricks and uranium “pseudospheres” used to achieve and control a self-sustaining fission reaction on December 2, 1942, inside a squash court at the University of Chicago’s Stagg Field.

Today we’ll pick up where we left off, as construction of CP-1 began on November 16, 1942.

As we approach the 80th anniversary of controlled nuclear fission, Nuclear Newswire is prepared to deliver not one but three #ThrowbackThursday posts of CP-1 highlights unearthed from past issues of Nuclear News.

ANS was founded in 1954, nearly 12 years after the first controlled nuclear chain reaction was achieved on December 2, 1942, inside a pile of graphite and uranium assembled on a squash court at the University of Chicago’s Stagg Field. By 1962, ANS was prepared to “salute the 20th anniversary of the first chain reaction” at their Winter Meeting, displaying a model of Chicago Pile-1 and presenting a specially cast medal to Walter Zinn, a representative of Enrico Fermi’s scientific team. Over the years, ANS has continued to mark significant anniversaries of CP-1 at national meetings and in NN.

A groundbreaking ceremony held last week at the International Atomic Energy Agency’s laboratories in Seibersdorf, Austria, marked the start of construction on a nuclear applications building that will host three state-of-the-art laboratories: Plant Breeding and Genetics, Terrestrial Environment and Radiochemistry, and Nuclear Science and Instrumentation.It was a significant achievement for the second phase of the Renovation of the Nuclear Applications Laboratories initiative, known as ReNuAL2—and a fitting way to observe the 60th anniversary of the nuclear applications laboratories at Seibersdorf, about an hour’s drive south the IAEA’s headquarters in Vienna. For Nuclear Newswire, it was all the reason we needed to dig into the Nuclear News archives and explore the bygone days of research at the IAEA.

This week’s Throwback Thursday post is again about Three Mile Island—this time looking at the coverage from the pages of the December 1979 issue Nuclear News about the Kemeny Commission. The twelve-person commission, announced by President Carter immediately after the accident in April 1979, was headed by John Kemeny—then president of Dartmouth College—with orders to investigate the causes and any consequences of the accident.

This week’s #ThrowbackThursday post features the special report published by Nuclear News in April 1979—one month after the accident at the Three Mile Island nuclear power plant. Titled “The ordeal at Three Mile Island,” the report provides readers with a quick review of the accident, how it happened (as much as was known at the time), its immediate effects on the general public, and the public discourse that followed. It should come as no surprise that the report covers some negative responses from the public and politicians of the time, but it concludes with the responses of some policy leaders who tried to put the accident into perspective.

Following up to last week’s #ThrowbackThursday post, we are again turning to the April 1984 issue of Nuclear News, reviewing the coverage in that issue about the five-year anniversary of the Three Mile Island-2 accident.

This week for the #ThrowbackThursday post, we are again turning to the April 1984 issue of Nuclear News, which was highlighted in February when we looked at the start of the federal program to convert research reactors from the use of high-enriched uranium to low-enriched uranium. This week, however, we are reviewing the coverage presented in that issue about the five-year anniversary of the Three Mile Island-2 accident.

The Department of Energy and Idaho National Laboratory announced this week that the sixth major core overhaul of the Advanced Test Reactor (ATR) is complete, after an 11-month outage that began in April 2021. The ATR was built as a key piece of mission support for U.S. Navy programs and first reached full power in 1969. Today it remains “the world’s largest, most powerful and flexible materials test reactor,” in the words of INL—quite a feat for a reactor that was planned over 60 years ago.

Last week’s announcement from the Tennessee Valley Authority about its “New Nuclear Program,” which outlines the potential development of the Clinch River site near Oak Ridge National Laboratory in Eastern Tennessee, is the catalyst for this week’s #ThrowbackThursday post. The Clinch River site was originally planned to be the location for the Clinch River Breeder Reactor, a project that, at the time, was meant to be the future of the nuclear industry in the United States.

The ANS Fuel Cycle and Waste Management Division will present a webinar today at noon EST (the recording will be available via the webinar archive to all ANS members) featuring an international panel of experts on nuclear waste reprocessing. The panel will explore the idea of separating certain radionuclides from waste using recycling technology that enables pure materials to be used for other purposes.

In this first installment of a #ThrowbackThursday post, Nuclear News provides a review of radioisotope-powered pacemakers in response to an article in The Wall Street Journal. The article, published earlier this week, looks at the issue of disposing of nuclear-powered pacemakers, although considering how few are still in use today, it seems like this is really much ado about nothing.