Quote:
Originally Posted by Citroënbender
…That it’s impossible to get large even blocks of blue metal’s parent stone (basalt?).
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Ardglen Quarry at the top of the Upper Hunter, between Murrurundi and Willow Tree.
Formerly owned by the NSWGR. railway ballast.
https://daracon.com.au/services/quarries
Basalt everywhere in the upper Hunter Valley. Slabs ??
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