According to one 2015 study, one person is killed each year by an industrial robot in the US alone. Indeed, according to the US occupational safety administration, most occupational accidents since 2000 involving robots have been fatalities.
Robots used in medical surgery were also held responsible for the deaths of 144 people between 2008 and 2013. More recently, Elaine Herzberg was killed by an Uber autonomous car that hit the 49-year-old at 40mph as she was crossing the road in Tempe, Arizona in 2018.
DARPA seeks portable muon-making machine to see through almost anything
[…]
DARPA imagines using muons to do things like scanning buildings “to characterize internal structures and detect the presence of threat materials such as special nuclear materials.”
“Other potential applications include rapidly mapping the location of underground tunnels and chambers hundreds of meters below the Earth’s surface,” the Agency asserts.
I see no solar solutions, other than a big giant mirror, in any of the design renderings but the article states that the site will be 100% powered by renewable energy.