Mini-bomb

A mini-bomb was carried by the Second Doctor. At night, he attached the bomb to the base of a Cyber-statue. The next morning, the Doctor detonated the bomb, which toppled and destroyed the Cyber-statue. As intended, the destruction of the Cyber-statue distracted the Cybermen, allowing their human slaves to overrun their defensive ray-gun posts and overthrow the Cybermen. (COMIC: The Cyber Empire)