I have done a small article on my blog about this. There is also a link to my website with a list of companies that perform this kind of work. Unfortunately I have only been able to find large companies so far and any one who does asbestos removal can be added to the list free of charge.
Apparently many people have dug a large hole and buried it in the past, totally against the law and I think the French authorities are a lot hotter on this sort of action now.
I wonder how the removal companies dispose of it! probably a large hole in the ground anyway. But at least they use protective clothing and masks when removing it, as it is the fine dust particles that can cause long term illness.
BLOG post http://frenchclassified.blogspot.com/2011/11/asbestos-removal-in-france.html