The clones gave a better look at the vault door's sides, particularly in the area where the metal met the surrounding concrete walls.
"The frame's reinforced," one clone said. "There is actually no way to blast this thing off without making noise."
"Yeah," another clone said. "…but the walls themselves can be worked with…"
The walls were made of reinforced concrete. This meant that while they might find problems destroying it because of the noise, they could actually drill a hole in it without making much of it.
"That's going to make some noise, but not as much as destroy the door or taking it off its hinges."
"Yeah." A clone moved along the wall. "The concrete's old here, weakened by moisture and time. We could drill through this point."
He went in front of the area he wanted to drill into.
A large patch of dark mold stained that part, spreading like a map across the damp surface. Its edges formed fractal patterns in shades of deep green and black.
