Boral failed to ensure the workers were wearing respiratory masks correctly while working on site over those days, Magistrate Carolyn Burnside said in her sentencing remarks.

Source: https://www.9news.com.au/national/construction-giant-boral-fined-over-silica-exposure-melbourne-magistrates-court-victoria/c60fab83-cfad-450d-b3be-7cc325fc020c

In its proposal, Boral notes that latite, which is mined at Dunmore, is critical for major infrastructure projects in the Illawarra and greater Sydney, and that the expansion would enable further deposits of this material to be exploited.

Source: https://www.illawarramercury.com.au/story/8211422/boral-dunmore-quarry-expansion-labelled-a-test-of-environment-laws/?src=rss