Each note takes one decision that is expensive to revisit, and explains what it actually costs to get wrong. Written for owners and project managers, not for engineers.
Height is set by the largest part you must lift out of the crusher — not by throughput. Owners who size from tonnage build a hall that stops working the first time a shaft comes out.
The honest answer is not a number. It is a cost curve, and it turns earlier than most owners expect.
New notes are published regularly. If you want them as they appear, ask me to add you to the list.