Ann: Kin Announces Decision to Mine The Leonora Gold Project, page-30

the site plan in the DFS shows both so everything appears to be as expected.
At Lawlers it appears (from the fotos I have seen) that there are two enormous FOB's, one for each mill. Hopefully those monstrosities are staying behind and not being somehow recycled.

Basis of a successful milling operation is to keep the mill turning 24/7 365 days a year.

Commissioning also test all the ancillary stuff as you mentioned. Can't run out of Cyanide, Lime gas for the gold room furnace, diesel/gas for the power station etc. etc. It also tests the electrical circuits and loading etc.

It also tests the procedures and systems in place for various scenarios, such as gas leaks, power cuts, mechanical failures and others. I bet the team have someone fulltime writing all that stuff as the DMP will be looking at all of it.

Exciting times ahead, I am looking forward to hearing the first earth has bee turned at the site. Who will they get to do that symbolic first shovel?