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Lawley, C.G., 2018. ASX:PTR, 24th October 2018, Drilling Extends Silver, Lead and Zinc Mineralisation and Identifies New Nickel Prospective Zone.
Lawley, C.G., 2018. ASX:PTR, 14th September 2018, Petratherm Commences Drilling at Corunna Silver, Lead and Zinc Prospect in South Australia.