Trans Australian east-west rail line lengthy closure, page-4

Agree. Western Australia is especially vulnerable to supply chain problems, more so than Far North Queensland.

Latter has occasional damaging cyclones and hence floods, but WA also has cyclones in the northwest as well as floods as we've seen above.

With coastal shipping in frequency, reliability ("blank sailings" that are cancellations) and punctuality (terrible) not what it was (and every ship foreign-owned with foreign crews), and the recent flooding having even cut the much more southerly main Adelaide to Perth highway as well as for a longer period the east-west vital rail line, it's very wise of COL and its supplying manufacturers such as private equity owned Darrell Lea and USA-owned Mondelez (Cadbury) to plan well ahead.