The State Opposition has alleged new Mining Minister Adam Brooks had a conflict of interest in his previous government role, likening the successful businessman-turned-Parliamentarian to controversial Queensland MP Clive Palmer.

Key points: Opposition alleges Brooks had conflict of interest in past trade role

Opposition alleges Brooks had conflict of interest in past trade role Mr Brooks describes attack as grubby

Mr Brooks describes attack as grubby Opposition says it is concerning he is the sole shareholder of MSS

In response to questions in State Parliament, Mr Brooks confirmed he resumed an active role in the company he founded, Maintenance Systems Solutions (MSS), while he was parliamentary secretary for trade.

As a member of the Opposition, Mr Brooks stepped down as managing director of MSS Australia in 2012, after the Greens accused him of a conflict of interest.

Since being appointed Mining Minister in February, replacing the retired Paul Harriss, Mr Brooks has resigned his directorships and is in the process of divesting himself of his business interests.

Deputy Opposition Leader Michelle O'Byrne led the attack on Mr Brooks in Parliament today.

"Given the very serious conflict of interest that has quite clearly occurred, can you categorically rule out that at no stage while you were the parliamentary secretary for trade did you meet with, present to or have contact with any company that has a commercial relationship of any kind with Maintenance Systems Solutions or its international affiliates ... or any other company in which you hold shares or directorships?" she asked.

Mr Brooks described the Opposition's tactics as grubby.

"They've been on the public record, been disclosed as required, there is no conflict of interest there, and yet the Opposition, because they've run out of anything else to ask about, they've now decided how dare someone recover from the disaster of the Labor-Green government train wreck," he said.

Ms O'Byrne was concerned Mr Brooks remained the sole shareholder of the company.

"Further given that you retain ultimate control of the company as it's sole shareholder, isn't it a fact you remain a shadow-director of this company in the same manner that federal MP Mr Clive Palmer was accused of being the shadow-director of the failed Queensland Nickel?" she said.

Mr Brooks strongly denied he was a shadow-director and returned fire by accusing the Opposition of embarking on a "personal smear campaign because of your pathological hatred of people who are successful".