The unmarked storage room on Isla Nublar was discovered by Tim Murphy. The room was located behind the maintenance building. It was underground, with a steel storm door covering the steps into it. Inside were many gas masks in plastic containers, hanging on the wall. There were also multiple glass cubes with steel caps, about two feet high. Inside the cubes were smaller dark spheres. These spheres were gas grenades, filled with the inhalation nerve gas MORO-12. Robert Muldoon and Alan Grant used the grenades and gas masks to arm themselves when investigating the raptor nest.