The world's third biggest platinum producer, Lonmin Plc has confirmed Roger Phillimore as chairman after he held the post on an interim basis, the firm said on Monday.

Phillimore, 59, agreed to be interim chairman after John Craven retired on Jan. 29 and was initially not available to assume the role on a permanent basis, a statement said.

With his detailed understanding of both Lonmin and the PGM (platinum group metals) industry, the board believes that Roger is the right person to lead the board as it implements significant changes to the business, senior independent director Michael Hartnall said.

Phillimore, a dual citizen of Britain and South Africa, was previously joint managing director of Minorco and is current a non-executive director of Harry Winston Diamond Corp.

On Feb. 24, Lonmin said it planned to dismiss up to 5,500 workers at its South African operations after demand tumbled. [ID:nLO354815]

Lonmin, whose biggest shareholder is mining group Xstrata (XTA.L: Quote) with 25 percent, rejoined the FTSE 100 index .FTSE on Monday in the latest quarterly reshuffle. (Reporting by Eric Onstad; Editing by Hans Peters)