Cannonball concretions are large spherical concretions, which resemble cannonballs. Four ornamental cannonballs are located next to the cannon. Others suggest that the two armies lobbed potatoes instead of cannonballs or mortars. Advances in gunpowder manufacturing soon led the replacement of stone cannonballs with cast iron ones. In the absence of cannonballs, they gathered metal scraps to fill the cannon. After ramming, the turtle ship would unleash a broadside volley of cannonballs. At first, the Texians matched Mexican artillery fire, often reusing the Mexican cannonballs. The plinth also held two lampposts and a pyramid of four cannonballs. Both triple guns fire nine-pound cannonballs. The Spanish had expended 125,000 cannonballs against the English. Its batteries had furnaces for making cannonballs red hot. Its full broadside contains 16 cannonballs that weigh 192 lb (). In order to counteract the cannonballs, defensive walls were made lower and thicker. He has superhuman strength, enough to lift and throw cannonballs like baseball pitches. The angled walls also reduced the chance for more destructive straight-on hits from cannonballs.