Okay continuing my research although my day job has me busy on the road. Reporting in from Singapore. Today I spent some time researching whether there are geographical differences in pallet forms. While this may sound to be obscure and maybe even a waste of precious time... I again have to mention that we have not yet even identified the substrate materials and finishes of the pallet in fields. Before we even address fastening methods and processes (yes Wagtail... including your bloody nail patterns) we must understand the basic molecular makeup of the pallets themselves.
My initial findings are that the two prevalent materials are in play here in SE Asia. The popular substrate is wood and most prevalent species is Philippine Mahogany with a nail fastening scheme. I was unable to determine the type of nail (ring-nail, hot dipped galvanized, screw blunt diamond, etc.) but the nailing patterns were somewhat random suggesting robotic process are not widely employed. This was a little disheartening to me for some reason, I think because I think it shoots holes in the alienist theory (if they came this far, truly there would be more organization unless of course they are just trying to fit in and not be noticed).
The second material I discovered was a composite that appeared to be a thermoplastic, and I am guessing to be of high density polyethylene or possibly polycarbonate. This of course was homogeneous in that a primitive fastening system was not evident.
Thirdly, I discovered a wood/metal combination constructed pallet. This type seemed to function as a platform for very high mass objects. In all cases, I am unable to disclose the content that is being transported by these pallets. I apologize but this information is protected by ITAR and EAR laws. I however wish to submit the following photographs as evidence in our quest.
Note: I apologize for the third thumbnail being inverted. I don't understand this phenomenon only on this pic as I am at 1.300degN latitude. Clicking on the thumbnail seems to properly 'orient'. Sorry for the pun.
Note to big brother (NSA): Please understand that our quest for the truth re: pallet in field... the information herein should not be construed as an assault on any national secrets both domestic and foreign.