Prison Knife

The Prison Knife is a melee weapon used in the mission "Vorkuta" in Call of Duty: Black Ops. It appears to be a piece of metal with black tape around one end, similar to a "shank". Mason acquires it after killing the guard attacking Reznov with a boulder in the opening scene. The player may use the prison knife for as long as he/she wishes, but this is not recommended, as the player must protect Sergei, Reznov and himself while they push the mine cart. After Mason has acquired the Makarov, the prison knife is no longer equipped, and is only used by pressing the melee button. Blood (or perhaps rust) can be seen on the blade, most likely from stabbing prison guards. The blade is very crude as it is only made of a long and narrow piece of metal with black tape at one end acting as a handle.

Trivia

 * For some reason, Mason does not kill the first prison guard with the knife, instead killing him with a rock.
 * When Mason slashes at other prison guards with the knife, there is no blood, and the knife doesn't even look like it hit the guards properly.
 * The player can kill all the guards in the mine tunnel on the way to the elevator, even the ones being held back by other prisoners, for they will eventually overpower the prisoners and run off after others.
 * The player can even kill the guards on the ground being assaulted by escaped prisoners. This may be difficult for the player must knife the guard at an angle to score a hit.
 * The knife may be used by the normal melee button or the button to shoot in-game.