In my opinion:
Item "9. Sorting and preconcentration" should be removed, since they
are part of the concentration processes. "Water management" is a good
topic, as recommended already.
Item "10. Recycling and reprocessing of historic mine wastes" should
be in the form of "Recycling and reprocessing of mine wastes" or "Zero
waste approach in mineral processing".
Regards,
Al??nt?? Society for Mining Metallurgy & Exploration