I would not read to much into this. It appears that the plan was to land the chopper, not bail out. I suspect that the chopper stored a lot of different supplies for various contingencies, one being potential hazardous materials. Part of standard emergency response supplies. They were not fully sure of what they would expect to face on the island. (Remember that there were haz-mat suits and respirators in the Hatch and at Dharma HQ).
Daniel said they were losing power so they started dumping supplies, so I suspect that their are several other scattered metal boxes with interesting supplies which may come into play. I also would not be surprised if someone finds Daniel's lost pack, with his "phone" and other curious items (a copy of Ben's picture, island maps, instructions?).