Ann: Development Progress - Lindi Jumbo Mine, page-2713

You are correct where most of the ore will pass through the primary jaw crusher and more will pass through once they process the process ore rather than the development ore.
Then all the fine ore will bypass the secondary crusher straight into the fine ore bin by using the screen. Before going into the mills the fine ore will go through the drum scrubber removing all the fines that will go straight to the floatation tanks.
Spid has not been able to provide evidence where SYR has the same process and is why they loose flake size though the crushing and grinding process.