During a Jan. 31 test, the newly developed 1,000-pound-class warhead set a record when it punched through 19 feet, 3 inches of a 20-foot, 330-ton, steel rod-reinforced concrete block rated at 12,600 pounds per square inch compressive strength. In fewer than 10 milliseconds, the explosion delivered into the target more than 110 million foot-pounds of energy via a high- velocity jet of molten metal.
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