The current CEO/Master of the Mint, Ian Bennett was appointed by Stephen Harper (a Conservative government appointed patronage position) on June 12th, 2006. Other high level executive partonage appointments at the Mint have also been appointed since then.
As for inventory accounting of the precious metals, all was fine and accounted for during all of the annual independent audits during the Liberal government regime. It was only until the past year has there been missing precious metals at the Mint under the current Conservative government.
For some reason, the (Conservative) Minister of Public Works and Government Services, Christian Paradis, knew the facts about the missing gold much earlier, but delayed to involve the RCMP until recently.