if i was pdn, page-22

That is one aspect. At the other end of the scale. At start up they build the plant to the expected capacity of all known resources coming online within an acceptable timeframe according to the individual mines production/cash flow analysis.

Uranerz (nearby to Lance) is doing just that, so the plant will be operational before the second site is ready. This causes a surplus capacity until the next stage comes online.

PEN will most likely eventually do the same with Lance. However Lance has the potential to be rather large. Along with this may come a need for either continued tolling for the excess they have from the IEU's or alternately to upgrade the plant.