The under-performing Spring Creek underground coalmine at Dunollie was a major contributor to Solid Energy's dramatic fall from grace, according to the Auditor-General.
Solid Energy mothballed the mine, with the loss of 230 jobs, in October 2012 but an Auditor-General investigation has revealed that the State-owned coal producer had considered putting the mine into care and maintenance much earlier than that.
A report from that investigation, explaining how the company ended up in such trouble, was presented to Parliament's commerce select committee yesterday.
It includes a report on Spring Creek to the Solid Energy board in 2009, which noted the high development costs, delayed extraction of coal, less extraction than planned in some panels and that the board had queried health and safety risks at the mine.
Spring Creek was reliant on support from shareholders to operate and was a big influence on Solid Energy's debt in 2011-12 and 2012-13. Until February 2012, Spring Creek Mine assets were shared between Solid Energy (51 per cent) and Cargill International SA (49 per cent).