TOKYO (AP) — A robot that has spent months inside the ruins of a nuclear reactor at the tsunami-hit Fukushima Daiichi plant delivered a tiny sample of melted nuclear fuel on Thursday, in what plant officials said was a step toward beginning the cleanup of hundreds of tons of melted fuel debris.
The sample, the size of a grain of rice, was placed into a secure container, marking the end of the mission, according to Tokyo Electric Power Company Holdings, which manages the plant. It is being transported to a glove box for size and weight measurements before being sent to outside laboratories for detailed analyses over the coming months.
Plant chief Akira Ono has said it will provide key data to plan a decommissioning strategy, develop necessary technology and robots and learn how the accident had developed.
The first sample alone is not enough and additional small-scale sampling missions will be necessary in order to obtain more data, TEPCO spokesperson Kenichi Takahara told reporters Thursday. “It may take time, but we will steadily tackle decommissioning,” Takahara said.
Despite multiple probes in the years since the 2011 disaster that wrecked the. plant and forced thousands of nearby residents to leave their homes, much about the site's highly radioactive interior remains a mystery.
The sample, the first to be retrieved from inside a reactor, was significantly less radioactive than expected. Officials had been concerned that it might be too radioactive to be safely tested even with heavy protective gear, and set an upper limit for removal out of the reactor. The sample came in well under the limit.
That's led some to question whether the robot extracted the nuclear fuel it was looking for from an area in which previous probes have detected much higher levels of radioactive contamination, but TEPCO officials insist they believe the sample is melted fuel.
The extendable robot, nicknamed Telesco, first began its mission August with a plan for a two-week round trip, after previous missions had been delayed since 2021. But progress was suspended twice due to mishaps — the first involving an assembly error that took nearly three weeks to fix, and the second a camera failure.
On Oct. 30, it clipped a sample weighting less than 3 grams (.01 ounces) from the surface of a mound of melted fuel debris sitting on the bottom of the primary containment vessel of the Unit 2 reactor, TEPCO said.
Three days later, the robot returned to an enclosed container, as workers in full hazmat gear slowly pulled it out.
On Thursday, the gravel, whose radioactivity earlier this week recorded far below the upper limit set for its environmental and health safety, was placed into a safe container for removal out of the compartment.
The sample return marks the first time the melted fuel is retrieved out of the containment vessel.
Fukushima Daiichi lost its key cooling systems during a 2011 earthquake and tsunami, causing meltdowns in its three reactors. An estimated 880 tons of fatally radioactive melted fuel remains in them.
The government and TEPCO have set a 30-to-40-year target to finish the cleanup by 2051, which experts say is overly optimistic and should be updated. Some say it would take for a century or longer.
Chief Cabinet Secretary Yoshimasa Hayashi said there have been some delays but “there will be no impact on the entire decommissioning process.”
No specific plans for the full removal of the fuel debris or its final disposal have been decided.
This photo released by Tokyo Electric Power Company Holdings (TEPCO), shows a robot, top right, clips a tiny gravel of what it believed to be melted fuel debris at the No. 2 reactor of the Fukushima Daiichi nuclear power plant in Okuma, Fukushima, northern Japan, on Oct. 30, 3024. (Tokyo Electric Power Company Holdings via AP)
A device to remove debris from a reactor at the damaged Fukushima Nuclear power plant demonstrates to pinch a stone, as revealed in Kobe, western Japan, May 28, 2024. (Kyodo News via AP, File)
FILE - Tokyo Electric Power Company Holdings, also known as TEPCO, the operator of Japan's wrecked Fukushima Daiichi nuclear power plant, reveals a robot to be used to retrieve debris at the power plant in Kobe, western Japan, May 28, 2024. (Kyodo News via AP, File)
Microsoft has fired two employees who interrupted the company's 50th anniversary celebration to protest its work supplying artificial intelligence technology to the Israeli military, according to a group representing the workers.
Microsoft accused one of the workers in a termination letter Monday of misconduct "designed to gain notoriety and cause maximum disruption to this highly anticipated event.” Microsoft says the other worker had already announced her resignation, but on Monday it ordered her to leave five days early.
The protests began Friday when Microsoft software engineer Ibtihal Aboussad walked up toward a stage where an executive was announcing new product features and a long-term vision for Microsoft's AI ambitions.
“You claim that you care about using AI for good but Microsoft sells AI weapons to the Israeli military," Aboussad shouted at Microsoft AI CEO Mustafa Suleyman. "Fifty-thousand people have died and Microsoft powers this genocide in our region.”
The protest forced Suleyman to pause his talk while it was being livestreamed from Microsoft's campus in Redmond, Washington. Among the participants at the 50th anniversary of Microsoft's founding were co-founder Bill Gates and former CEO Steve Ballmer.
Microsoft said Suleyman calmly tried to de-escalate the situation. “Thank you for your protest, I hear you,” he said. Aboussad continued, shouting that Suleyman and “all of Microsoft” had blood on their hands. She also threw onto the stage a keffiyeh scarf, which has become a symbol of support for Palestinian people, before being escorted out of the event.
A second protester, Microsoft employee Vaniya Agrawal, interrupted a later part of the event.
Aboussad, based at Microsoft's Canadian headquarters in Toronto, was invited on Monday to a call with a human resources representative at which she was told she was being fired immediately, according to the advocacy group No Azure for Apartheid, which has protested the sale of Microsoft’s Azure cloud computing platform to Israel.
An investigation by The Associated Press revealed earlier this year that AI models from Microsoft and OpenAI had been used as part of an Israeli military program to select bombing targets during the recent wars in Gaza and Lebanon. The story also contained details of an errant Israeli airstrike in 2023 that struck a vehicle carrying members of a Lebanese family, killing three young girls and their grandmother.
In its termination letter, Microsoft told Aboussad she could have raised her concerns confidentially to a manager. Instead, it said she made “hostile, unprovoked, and highly inappropriate accusations” against Suleyman and the company and that her “conduct was so aggressive and disruptive that you had to be escorted out of the room by security.”
Agrawal had already given her two weeks notice and was preparing to leave the company on April 11, but on Monday a manager emailed that Microsoft "has decided to make your resignation immediately effective today.”
It was the most public but not the first protest over Microsoft's work with Israel. In February, five Microsoft employees were ejected from a meeting with CEO Satya Nadella for protesting the contracts.
“We provide many avenues for all voices to be heard,” said a statement from the company Friday. “Importantly, we ask that this be done in a way that does not cause a business disruption. If that happens, we ask participants to relocate. We are committed to ensuring our business practices uphold the highest standards.”
Microsoft had declined to say Friday whether it was taking further action, but Aboussad and Agrawal expected it was coming after both lost access to their work accounts shortly after the protest.
Dozens of Google workers were fired last year after internal protests over a contract it also has with the Israeli government. Employee sit-ins at Google offices in New York and Sunnyvale, California targeted a $1.2 billion deal known as Project Nimbus providing AI technology to the Israeli government.
The Google workers later filed a complaint with the National Labor Relations Board in an attempt to get their jobs back.
CORRECTS DATE - A pro-Palestinian demonstrator, Ibtihal Aboussad, is escorted away by security as they interrupt Microsoft AI CEO Mustafa Suleyman during a presentation of the company's AI assistant, Copilot, ahead of a 50th Anniversary presentation at Microsoft headquarters, Friday, April 4, 2025, in Redmond, Wash. (AP Photo/Jason Redmond)
