Gaspare,
Here is a very interesting article about how bad the sulfur problem is in the The Czech Republic. Plus the website it came from.
It was cheap and available by surface mining, but it was also high in ash content, up to 40% by weight, and in sulfur content, 1 to 15%. ...
www.wisc.edu/.../.Document-divided-by-Chapter-with-Sear...nmental-Proble1.html - 27k - Cached - Similar pages
As far as seeing straw and hay I understand what you are saying.. The only problem is that hole is less than half a foot deep. Now I not a expert but one would think a bunker or latrine would be more than 6" deep. Again I have MAJOR concerns about this.....
