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Nitrogen+Syngas 396 Jul-Aug 2025

21 July 2025

NOx release at Austin Powder

There has been a release of nitrogen oxides from Austin Powder’s Red Diamond plant in Ohio. The company says that the decomposition of nitric acid caused the incident due to elevated temperatures inside a 5,000-gallon storage tank. This led to a visible release of nitrogen oxide gas, which was vented through the plant’s built-in safety systems. Austin Powder says that its team activated emergency response protocols and notified the Ohio Environmental Protection Agency (EPA). Air quality modelling conducted at the property’s fence line confirmed that NOx levels remained below health-hazard thresholds. The company is conducting an internal investigation to determine the root cause of the temperature rise that led to the gas release.

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Mining licence approved for Ammaroo phosphate project

Austrlai’s Northern Territories Government has approved a mining licence for Verdant Minerals’ Ammaroo phosphate project. The approval follows the granting of two mineral leases in March and represents a critical step towards construction and mining operations at one of the world’s largest phosphate resources. Verdant estimates the value of production over the life of the mine to exceed $15 billion. Verdant says that securing the mining licence puts the project firmly on track to reach a final investment decision and commence construction as early as mid-2027. Located 200 kilometres south-east of Tennant Creek, the Ammaroo phosphate deposit contains more than one billion tonnes of phosphate ore.