 Sixteen storage rooms serving as expense magazines for cartridges and shells are situated off the tunnel, with ammunition lifts linking them to the gun positions above.The main magazine consisted of two cartridge and shell stores, from where the ammunition would be transported along the tunnel to the smaller expense stores.To ensure that there was no possibility of sparks or naked flames causing explosions, safety lighting was provided from behind glass screens while the magazine workers had to wear special magazine slippers and safety clothing to ensure that they could not create sparks when they moved.