Respectfully. In the HotCopper search bar. Mining8 Freehold - Highly regarded and one of the most detailed prolific posters on HotCopper. PASBOZ qball - provides many links to twitter content, and highly regarded posters Read the last 10 posts of each poster.
I have recently posted some links to posters - re the historic tin mine at Manono.
If you are on twitter - Follow AVZ
Found out recently that a friend, made a good return on Core last year. I've been in AVZ since just after the first drill hole in 2017.