Yes thanks for posting Stuart
In NSW too, quarries are poorly documented. There may be some information through DIGS if they were considered important enough to warrant inspection or to be included in Geological reports.
However quarried on private land are mostly undocumented, quarries on Crown land are often licenced through the Miscellaneous branch of the Lands Department and possibly a bit more searchable through the digitised NSW Government Gazettes on Trove.
Dr Iain Stuart
P.O. Box 2397