Is this thread about Freeman or about dermal/artifact experiments? Can we try to stay on topic here? (although the butt print casted by Freeman is very interesting...the details are, um, detailed...)
First, the road....we do not know if the road was newly constructed (the FS lists the date for the road as 1965) or freshly bladed. Regardless, as I noted before, the material on the surface would be fairly free of organics (as it would have either scraped away the top layer or brought lower soil to the surface). Later, as folks drove on the road, it allowed road dust to be kicked up and settle on the side of the road and into the prints...that is very clear from the photos.
Second...the soil sent to tube and Melissa was scraped from the road itself (not the side of the road), so it had some organics, but not the kind of organics that you will find in the rest of the forest. Outside of the fact that it was on top of the road, I would not use the term "top soil" to describe it, as top soil is the organic layer that allows plants to grow.
Third...I completely disagree that using volcanic ash in anyway replicates the soil at Onion Mountain (that does not negate that artifacts were produced in the ash, but only that it is NOT the soil at Onion Mountain). I also completely disagree with the statement by tube of:
QUOTE
Remember, this is not a question of whether or not today's Onion Mountain soil can or cannot support casting artifacts, it is a question of whether or not it did almost 40 years ago. The overwhelming amount of evidence suggests it did.
There is NO way for anyone to know what that soil could do 40 years ago. We can indeed test the soil from today and see what it can/can't do and hypothesize backwards. It's not like the Forest Service brought in truck loads of new soil or removed the soil that was there. The point that is getting missed is that it may not be the same consistency or content, but it is the same soil. Just because it didn't produce artifacts doesn't mean it can't...more work is needed. What I would suggest doing is the following (please note that I have a geology minor, and though no expert in soil, I did spend a great deal of time processing soil samples form archaeological sites as a grad student and punishment for arguing with a professor over bigfoot):
1. Separate the soil that I send you into three batches. Keep one as it is; take the two other batches and DRY screen it through progressively smaller screen until all visible organics are removed and a very fine powder is left. Take one batch of the dry screen soil and set aside. Take the other batch of dry screened soil and WET screen that through window screen...take the soil LEFT on the screen (any non-visible organics should pass through), place on a tray and let dry out of the wind.
2. Now experiment with the two soils...dry screen and wet screen. I would try making a print, then leaving the uncasted print in the sun to "bake" (which sounds like what happened in 1967). I suspect highly that the heat of the soil at the time of casting (not necessarily the water) may also be a factor.
3. Report back the results.
4. Folks need to stop bickering just to bicker! Let me state plainly the facts:
a. tube was able to produce artifacts using volcanic ash. For the love of God, this PROVES that dermals CAN be artifacts...there is no point in arguing about it...they were produced! Does it mean that Onion Mountain or any other dermals noted by Chilcutt ARE artifacts? No. Could they be? Yes. Is this some sort of threat to Chilcutt? No, so get over it.
b. Melissa has been UNABLE to product artifacts using soil from Onion Mountain using her methods and tubes methods. For the love of God, this PROVES that artifacts can only be produced under certain conditions....there is no point in arguing about it! Do we know those conditions? No. Do we need to know? Yes! Is this some sort of threat to tube? No, so get over it.

