Show TESTING KRUPP ARMOR PLATES RESISTED WITHOUT CRACKING washington dec 29 in tho presence of officials of the russian government ern ment several united states naval olTi cers and representatives of the carnegie steel company an 8 inch krupp plate a part of a lot of armor intended for the russian battleship now building at the cramp ship yards philadelphia was tested at the indian head proving grounds the plate was lyo inches long 93 inches wide and 8 inches thick and curved the gun used in making the test was an bight arch rifle the projectiles being armor piercing pounds each in weight tho required striking velocity was 1780 feet per second four shots were fired at the corners of a 28 inch square drawn in the center of the plate the striking velocity as measured by the chronograph was 1828 feet per second for the first shot 1759 for the second 1850 for the third and 1834 for tho fourth the penetration attained by the shells ranged from t to 2 58 5 8 inches the plato did nol crack under tho test and was very little injured the test was regarded by those present as entirely satisfactory |