"No restrictions on use"@en . . . . . . "irn2929" . . "The bolt was discovered by William Rule in a V-2 rocket tunnel in 1945 in the tunnels at Nordhausen. He was a member of the 238th Combat Engineers Division."@en . "The bolt was donated to the United States Holocaust Memorial Museum in 1990 by William Rule."@en . "overall: Height: 1.880 inches (4.775 cm) | Width: 0.630 inches (1.6 cm)"@en . . "No restrictions on access"@en . "Aluminum bolt found in a tunnel at Nordhausen by a US soldier"@en .