C-bomb

Unlike steel, cobalt absorbs radioactivity, and in the explosion of a C-bomb, the thick shell of cobalt metal would be blasted apart with such force that the cobalt would be pulverized into very fine dust.

However, herein lies the anxiety of using the C-bomb. While I am very happy to use it (a little too liberally admittedly) in my everyday parlance, it still feels slightly shocking to see it written down and one is reminded that, for many, it is still the last word in offensiveness.