Coal from Blair Athol is subject to three stages of independent testing.
The record sales provided a platform for the company to achieve its total coal sales forecast.
The platform is set for the company to continue to grow into a mid-tier coal producer.
The Blair Athol mine gives it a hub for development across major coal basins in Queensland.
Coal sales from Blair Athol for the March quarter came to 587,000 tonnes.
The company reported a record annual revenue of $147.1 million on the back of record production.