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Two 160,000-pound valves rode a barge through a 35-foot tunnel into the base of the tallest dam in the country, behind a pair that has been there since the dam was built, because when the lake drops below the powerhouse intakes, they’re the last way to let water out
Six specks of Chernobyl reactor fuel no wider than 0.002 inches spent 40 years in the soil with their crystal structure still largely intact, and German scientists found it by rotating each one through 2,000 angles in an X-ray beam wider than the specks themselves
A 2,017-ton German submarine surfaced off the tip of Scotland so British commandos could ride inflatable boats ashore, climb the cliffs and aim a 401-foot Portuguese frigate’s gun at targets inland, a level of coordination their unit had not managed in nearly 30 years
A 511-ton German machine named Caroline cut 1.4 miles through chalk under the Thames and came out underwater, into a shaft flooded on purpose so groundwater could not pour in through the hole she made, leaving a tunnel for 400,000-volt cables 49 days early