I'm not sure if this has been posted before
http://www.melisa.org/articles/engel-e.pdf

but thats a pretty interesting article done by a swedish dentist. Also at that site there are some other articles that are informative ie you can just copy and paste the
http://www.melisa.org
part
also there are some things we dont know about these people in the article
#1 did they have the amalgams removed in any specific way
#2 did they do any detoxing?

knowledge is power