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A 5-megawatt reactor sealed in a 1,000-ton steel vault on a Texas university campus got federal sign-off on its final safety analysis, one review away from permission to go critical, with the full-size core of a 20-megawatt reactor fueled for a quarter of the power
A broken mechanical arm that reaches through a concrete wall into a shielded Tennessee lab room was worked by hand to repair the only other arm, whose hand came loose mid-job, and the 18 high-dose items they were pulling out didn’t wait up to six months for a replacement
A 1,764-ton Italian submarine started coming together from its hull sections at a Mediterranean yard, built around a lithium iron phosphate battery, the chemistry in cheaper EVs, that holds almost twice the energy of the lead-acid cells subs have relied on for over a century
A 281-ton German boring machine named Granite Janet has bored out of her pit under a New Hampshire bridge and dug 200 feet, passing under an active railroad with 10 to 12 feet of ground over her, and her 16 gantries won’t all fit inside until the tunnel reaches 580 feet