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The Attapulgite mining tenements are located just off Dartmoor Lake Nerramyne Road which is about 460km north of Perth and is about 170km from Geraldton. They are almost exclusively within Pinegrove Pastoral Lease.

Mining operations to extract Attapulgite commenced at Lake Nerramyne in 1978. The Attapulgite mining tenements collectively cover approximately 2681ha in total with an Inferred Resource of approximately 23.4 million tonnes. The Attapulgite mining tenements contain the largest known deposit of Attapulgite in Australia that is of premium quality with exceptional absorption and adsorption capabilities.

Mining at Lake Nerramyne occurs on a campaign basis every 2 to 3 years. HRS had commenced mining campaign in 2019 in late spring/early summer which is still ongoing in 2021 to extract around 80,000 BCM of Attapulgite.

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