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- 16:36, 6 April 2024 John Leach talk contribs deleted page GBU-57 Massive Ordnance Penetrator (content was: "{{PropDel}}<br><br>{{subpages}} Built by Boeing under an initiative from the Defense Threat Reduction Agency (DTRA), the '''GBU-57 Massive Ordnance Penetrator''' is the largest hard target penetrator bomb in the United States Air Force inventory. Its total weight is 30,000 pounds/13,608 kg of which 5,300 lb/2,404 kg is explosive. The rest is principally a hard casing that can penetrate over 200 feet into concrete. It is the successor, in explosive yield, to t...")