Ring...shank...nails......holy cow...how on earth did anybody remove them?! (thoughts of them tenaciously gripping and resisting being pulled out come to mind)
The ring Shanks are tough, but the little copper wires that hold the nails together for the air nailer are the real challenge. Either way the experience is far from pleasant. In that particular case we clipped the nails between the hand and the board, and let the emergency room staff handle the rest.
dave