Former New South Wales premier Morris Iemma will be the first witness to give evidence at what is expected to be one of the nation's most explosive corruption inquiries.
On Monday Geoffrey Watson, counsel assisting the Independent Commission Against Corruption, will deliver the opening address for the second of three inquiries into serious allegations of corruption involving former Labor ministers.
Operation Jasper, which is expected to run for several months, will examine the circumstances surrounding a decision made in 2008 by the then mining minister Ian Macdonald to open a mining area in the Bylong Valley for coal exploration.
The commission will investigate whether that decision was influenced by former Labor powerbroker Eddie Obeid .
The first witness, Mr Iemma, will start giving evidence at 10am on Tuesday. He will be followed by another former premier, Nathan Rees, who is currently the shadow police minister. Next on the list will be former planning minister Frank Sartor.
The evidence of the three senior ALP figures, who are assisting the corruption commission, has been the subject of much speculation. Just how frank the trio might be is causing some trepidation within Labor ranks.
Mr Rees's premiership came to an end in late 2009. His fate was sealed when months earlier he forced both Joe Tripodi and Mr Macdonald from the cabinet.
"Should I not be Premier by the end of this day," Mr Rees famously said on December 3, 2009, "let there be no doubt in the community's mind, no doubt, that any challenger will be a puppet of Eddie Obeid and Joe Tripodi."
In September 2008, Mr Macdonald invited companies to apply for 11 coal exploration licences being opened up in NSW.
Fairfax Media has previously revealed that several licences were awarded to a $1 company run by a 36-year-old Bankstown mortgage broker, Andrew Kaidbay, who had no experience in the resources industry.
Mr Kaidbay is an associate of both Mr Tripodi and the Obeid family, and was the director of three resource companies in which the Obeids' majority shareholding was hidden via a nominee company.
The commission will also examine whether the decision to open the area in the Bylong Valley to mining was influenced by Mr Obeid and if confidential information regarding the tender process was given to people associated with the successful bidder, Cascade Coal.
Fairfax Media recently revealed that one of Mr Macdonald's closest friends, Greg Jones, was a secret investor in Cascade Coal.
The Obeid family paid $3.65 million for a farm in the Bylong Valley, about 80 kilometres east of Mudgee, nine months before the tender opened. Mr Obeid's son Moses encouraged associates to buy other properties in the area, telling them, "we can't be seen to be buying them all".
Those who did buy farms included Justin Kennedy Lewis, a long-time associate of Moses Obeid, and accountant John Campo, whose major clients are the property-developing Triulcio brothers, Ross and Rocco.
The Triulcios and the Obeids have been close business associates for years. The two families had a starring role at the corruption commission this week.
The Triulcios struggled to explain why they had paid $44,800 for a new Honda for their sister Nata Re. But before Mrs Re had ever set eyes on the car it was re-sold to former Labor treasurer Eric Roozendaal for only $34,000. The Obeids paid the $10,800 shortfall.
Mr Roozendaal will sit as an independent in State Parliament having been suspended from the ALP in the wake of allegations raised at the ICAC that Mr Roozendaal's car deal was a reward for favours done for Eddie Obeid - an allegation both men denied.
John Cherry, a tax adviser to the late Kerry Packer, is also on next week's witness list. In November 2007, Mr Cherry sold his 624 hectare property Cherrydale Park, with its sweeping gardens and an artificial lake, to the Obeid family company Locaway.
Also on next week's witness list are Justin Lewis, the Triulcio brothers and John Campo.