Statistics for occurrence #1 of “Colonel Bomford” in entry cannon of Harper's Encyclopedia of United States History:

...ents and makes the first malleable iron guns cast and converted in an oven, 1836. Earliest piece of heavy ordnance cast at the South Boston foundry, a 10-in. columbiad, under the supervision of Colonel Bomford ; weight, 14,500 lbs.; shot, 130 lbs.; shell, 90 lbs.; charge of powder, 18 lbs., Sept. 6, 1839. Character of gun iron definitely fixed by the metallo-dynamoter, a testing-machine invented by Ma...
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