The public inquiry into the cost and timetable escalations on RMJM's Scottish parliament building opened on Tuesday.
The investigation, headed up by Lord Fraser of Carmyllie, will attempt to explain why the cost of the Holyrood project - originally designed by Enric Miralles - has jumped from £40 million to more than £400 million.
Fraser pledged he would leave 'no stone unturned' in his 'determination to provide the people of Scotland with the answers to the many questions raised over this construction project'.
'The people of Scotland expect the truth, they deserve the truth and they will get the truth, ' he said. 'If anyone or any organisation attempts to get in the way, I will have no hesitation in naming and shaming them.
'While I appreciate that my inquiry should not be the cause of any further delay, I do expect all involved in the Holyrood project, from the earliest planning stage to the completion of the building, to collaborate with the inquiry team.
'To those that are demanding an exact date as to when the inquiry will report its findings, ' he added, 'I say simply: 'We will not be rushed - We will get it right'.'
Fraser is a former Conservative MP and minister for energy. In 1989 Margaret Thatcher appointed him Lord Advocate of Scotland, a post which put him in charge of the Lockerbie investigation.
In a letter to the parliament's presiding officer George Reid that announced the inquiry, Scotland's first minister Jack McConnell said Fraser was the 'right man for the job'.
'People rightly expect answers to questions about the way in which the cost to the public purse has escalated and the decisions that have lead to the position in which we now find ourselves, ' he said.