Based on 112 drill holes in 1959 and 32 in 1969, proved reserves were recalculated as 44 million tonnes in Lake Purdilla, 1 metre or more thick at average grade of 88.4% gypsum and 6 million tonnes in Lake Toorna, 1 metre or more thick at average...

Discusses the exploration potential of gypsum occurrences near Sceale Bay that were reported on by Lockhart Jack in 1921 and by others more recently. Following initial satellite imagery and photogeological studies, a brief field inspection of one...