This is the best we can do.  The jumble of tools had obviously been salvaged from the kits on the tractors in the camp.
Parts of the kits on the tractors on camp were salvaged.
mnli hypothesis: Parts of the kits on the tractors on camp were salvaged. premise: This is the best we can do.  The jumble of tools had obviously been salvaged from the kits on the tractors in the camp.