Analysis of information sources in references of the Wikipedia article "Parrott rifle" in English language version.
One of them, which sends a 100 lb (45 kg) shell, was fired fifteen times, and another, which sends a 200 lb (91 kg) shell, was fired five times.
One of them, which sends a 100 lb (45 kg) shell, was fired fifteen times, and another, which sends a 200 lb (91 kg) shell, was fired five times.