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The chemical contaminant is now known to have been ethylene diamine. At the time of the event, there was a concerted effort to define what the contaminant was (concentration in the Avgas was low); how the contaminant had got there; and what the contaminants behaviour would be in an aircraft fuel system.
It is widely used in the production of polyurethane fibers.
Gene Delivery The ability to deliver pieces of DNA to the required parts of a cell includes many challenges. Current research is being performed to find ways to use dendrimers to traffic genes into cells without damaging or deactivating the DNA. To maintain the activity of DNA during dehydration, the dendrimer/DNA complexes were encapsulated in a water soluble polymer, and then deposited on or sandwiched in functional polymer films with a fast degradation rate to mediate gene transfection. Based on this method, PAMAM dendrimer/DNA complexes were used to encapsulate functional biodegradable polymer films for substratemediated gene delivery. Research has shown that the fast degrading functional polymer has great potential for localized transfection. 
The fine particles produced by burning silver iodide flares mounted on frames extending aft of an airplane’s wings or ejected into clouds from a rack mounted underneath are the nuclei to which super-cooled water droplets attach themselves. Good timing and having aircraft in the right area at the right altitude are crucial factors in effective cloud-seeding.
For the AHSP, two turbo-prop aircraft and a piston twin-engine airplane are used by WMI. For the 2007 season, a Piper Cheyenne II and a Cessna 340...
...were based in Calgary, and a Beech King Air C90 operated from Red Deer. The turboprop aircraft, which have a greater rate of climb than the Cessna, are typically used to seed the upper portion of the clouds, while the C340 seeds the cloud base.
Originally posted by exile1981
2) Technically weather modification, and cloud seeding are releasing chemicals into the atmosphere so how can they not be considered as a type of chemtrail?
Exactly what we in Britain have not seen a single case of today.
Originally posted by CHRLZ
Originally posted by NOTHING 4 NO ONE
Still you are telling me nothing. I have conducted research.
So WHERE IS IT?? Show us the documents, the spreadsheets, the charts, the images, the videos and all the supporting information.
Alternatively, you may prefer to admit you are a chairborne web-based 'expert' and pretender.
This plane wasn't even near 35,000 ft.
Now as a researcher, you will know the reliable methods that allow a determination of aircraft height from the ground, so back to you - prove that statement. I'm impressed, very few people know how to do this, so when you post your evidence, you will gain even greater acclaim....
Additionally, you're only half right about the atmosphere having these "pockets" of just right conditions for producing legitimate contrails.
Err, say what???? He's 'half right'? What does that mean, exactly?
On a hot sunny day from horizon to horizon signifies there is an uniform condition of high pressure barring out any pockets of moisture or other influence producing these morphing smokescreens.
May I have some Italian dressing with that meaningless (and completely false) word salad?
[edit on 16-4-2010 by CHRLZ]
Originally posted by weedwhacker
Here, I did a favor and read your link, to, regarding the company in Canada. Good info there, IF you read the whole thing....
[edit on 16 April 2010 by weedwhacker]
Areas of high pressure= no moisture=no cloud formations=no ripe conditions for LEGITIMATE contrails.
Originally posted by NOTHING 4 NO ONE
Originally posted by jthomas
The burden of proof remains on those who claim "they are spraying" us.
Same worn cop out fashion.
You haven't dedicated your time into actually seeing this going on have you?
You have taken the easy way out. What proof are you willing to demonstrate key word is DEMONSTRATE not re-post, side with phage etc. regarding your OWN experiences with seeing these anomolies?
I asked people to think about the volume of air, not just in two dimensions, but in THREE. And to think about just how MUCH material would be needed, in order to bring levels of concentrations of whatever is alleged to be "sprayed" up to what the "chemtrail" con-artists claim.
As aircraft engines become more fuel efficient, contrails will form more frequently at lower flight levels because exhaust plumes of more efficient engines are cooler for the same water content (see Section 18.104.22.168). The overall efficiency h (Cumpsty, 1997) with which engines convert fuel combustion heat into propulsion of cruising subsonic aircraft was close to 0.22 in the 1950s, near 0.37 for modern engines in the early 1990s, and may reach 0.5 for new engines to be built by 2010 (see Figure 3-22). An increase of h from 0.3 to 0.5 in a standard atmosphere increases the threshold formation temperature of contrails by about 2.8 K (equivalent to 700-m lower altitude) (Schumann, 1996a).
btw, You've failed to address the chemical compounds in aviation fuel as well as what is commonly referred to chaff.
It should be clear by now the military douses the atmosphere.
It's also apparent commercial airliners dump fuel.