The silo can be pretty tough, especially if you don't know where you are going. This guide'll help. (Courtesy of Ben's Goldeneye Page). Just follow your way from room to room. Room:
1. Has 2 circuit boards, 1 keycard After this room, go right.
2. Has 1 circuit board, 1 keycard After this room, go right.
3. Has 1 circuit board, 1 DAT, 1 keycard After this room go left first to get the body armor and then go right.
4. Satellite, l keycard
Be sure to place the plastiques in every single one of these rooms. Place them on the wall, right on the triangle, in between the two yellow, horizontal lines. Be careful not to take many hits. Also, after the third room, there is body armor, even in 00 Agent. And in the fourth room, be sure to photograph the satellite. Then after the fourth room, when you open the door, our old friend Colonel Ourumov will be there. He obviously remembers you, because or orders the guards to kill you. Stay behind the wall and wait for the men to come. After the men have stopped coming, rush at Ouromov, firing. Ouromov will run off (and sometimes he'll drop his briefcase). Run after Ouromov through a computer room and to an elevator. Mission complete