Ann: Press Release Record 2018 NPAT A$184.7 MILLION, page-27

total manganese ore mined is about 1.25million tonnes if u include tshipi. That is 800k bootu and 450k tshipi. Assuming bootu doesnt expand their reserves. It would drop from 1.25million to 700k(250k+450k), a 40% drop. However, this will happen 2 years from now and only if management does not take action to increase reserves. In the interim, production will jump 20%, from 1.25mil to 1.5mil.

in addition, another 100mw worth of ferroalloys will come online by 2021, which will offset the decline of Bootu, again, this is assuming there is no increase in reserves.