These 13 Unpublished Polaroid Camera Shots are of the destruction sequence in the Auriga's spaceship lab where Ripley was cloned.
They are numbered as to which camera (A or B camera) will shoot what angle and what to photograph during the destruction sequence.
Ripley used a flamethrower to destroy the lab and because of the latex figure mock-ups and the large plastic cylinders this sequence could only be shot once. It was a cross your fingers type of thing.
That is why they took these Polaroids, so that everybody knew exactly what they were to do during this sequence.
