Mine Operations are managed by Sonoma Mine Management Pty Ltd on behalf of joint venture participants:

• QCoal Sonoma Pty Ltd, a privately owned Queensland resource company. QCoal initiated development of the Sonoma deposit;
• Cliffs Australia Coal Pty Ltd, a wholly owned subsidiary of Cliffs Natural Resources Inc, a major US producer of direct-shipping fines and lump ore, coking and thermal coal;
• JFE Shoji Trade Corporation, part of the JFE Steel Goup, one of the largest steel producers in Japan;
• China Steel, the largest steel producer in Taiwan; and
• Watami Trading, a Hong Kong based trading company

Established in September 2007, the mine's first shipment of coal product was railed in January 2008, with the first load of coal being shipped in February 2008. Sonoma Coal produces 4.0 million product tonne per annum of coking and thermal coal products for export to countries such as Japan, Korea, Taiwan and China. It represents a 170 million tonne resource.