ANY
debris comeing from the NYU flights WOULD HAVE BEEN, AND HAD BEEN,identified
as just that, BALLOON DEBRIS. Flight 4 was a "Service Flight" and NOT part
of the main series of launches, there is even some evidence to suggest it
MAY NOT have had ANY ML307 reflectors attached!, from the logs it seems the 
NYU team were having problems with the radar tracking and ommitted using radar
on a number of the flights. But to go over THE main point, these balloons
used 
standard materials, standard electrical components and standard metal foils,
you DID NOT need any of the team there to be able to identify these elements, 
they even put label's on them telling the finder what it was and how to
report 
it and claim the finders reward!!.
I'm sure with the alledged way the RAAF staff "vacuumed" the desert they would
have found at least one of these labels! 
Some  are  trying to make out these launches were using "super-hi-tech" devices
and unknown materials that only the "team" would be able to spot, NOT SO,
they were std meteo balloons, the foil was aluminium on paper, the sonobouy
was US NAVY issue, the radio link used everyday resistors, caps and tubes plus a
battery pack with standard batteries of the day all linked together with
standard pieces of wire. Dropping these from a few thousand feet will make a mess of
them but they will still be just the same stuff only a bit bent!.

Now look at the photos...order a set if you must and scan them yourself. Don't trust our scans. 
Do your homework and get back to us on these claims.