Firebird, I know people working in Guinea for the mining sector, I have lived in Guinea myself for about 5 years in the 80's... was a nice place!
But, be aware that right now, the political situation over there is not good at all, elections have again set things on fire a little... for now at least...
I know workers who wont go back to work for at least a few more weeks because of the bad situation over there.
I would suggest you to wait a bit for the situation to calm down before thinking to go over there, not the best moment at all .
Btw, hi to everyone (first post), very informative place, have been reading here for many months ... I'm more a reader than a wirter but when I see I can help :P
So, if you need further informations about the place, dont hesitate to ask!