Eromanga is the largest oil producing area in mainland Australia.

[1] The refinery is approximately 1,000 kilometres (620 mi) west of Brisbane, and almost as far from any coastline.

The primary product is low-particulate diesel, aimed particularly at the mining and outback transport industry.

[2] The company produces diesel and provides full supply chain service including transport and wholesale and retail sale to the transport and aviation industries.

[1] The name IOR is derived from the original company name of Inland Oil Refiners.