Dear Justin,
I think there is one simple primary answer to your question... any given
mining Co. will follow the legislation and requirements to their operation
laid down by State or Federal conditions/Law. The same principal will apply
in all other Countries.
As to the why's and wherefore's, well, there are two categories. 1). Curr
ent Opers., &, 2). Defunct Opers.. With the latter, well existing
legislation takes care of same: &, 2)., historic problems are handled by the
environmental bodies.
As to chemical treatments, well this has been around for quite a long
while; as to bio treatments, well, this has quite a bit to do with history of
'bio-mining' of course; as to DNA microarray, well, I do not know enough to
comment!
Sorry to not be of much help!
Regards, Bernard
|