Accountant Rick Allert was today elected chairman of the big Australian retailer Coles Myer and will formalise his resignation of major wine producer Southcorp at the company's annual meeting on October 31. Allert will be succeeded at Southcorp by Brian Finn, a director since 1994. Allert's departure - director of Southcorp and its predecessor SA Brewing Company for 19 years and chairman for 13 - further tightens the grip of the Oately family, who owned the Rosemount business before it merged with Southcorp.