RINKER GROUP SENIOR MANAGEMENT CHANGESApril 29, 2004Rinker Group Limited (‘Rinker’) Chief Executive David Clarke announced today that Karl WatsonJr., currently head of Rinker’s Readymix business in Australia and China, will return to the U.S. to take up the position of President, Rinker Materials West Division.Sharon DeHayes, currently President of Florida Materials and Gypsum Division, will relocate toSydney, Australia to assume the role of Chief Executive of Readymix, reporting to Mr. Clarke.The moves follow the departure of the current President of Rinker Materials West, Chris Murphy,who will be leaving the Rinker group effective 1 August to pursue other opportunities.Mr. Murphy was previously Chief Executive of Kiewit Materials Corporation, which was acquiredby Rinker’s US subsidiary, Rinker Materials Corporation, in September 2002.Mr. Clarke said Mr Murphy had overseen the successful integration of Kiewit into the RinkerMaterials organization, which meant that the acquisition had begun delivering returns above its cost of capital one year ahead of schedule.”Chris has done an excellent job of integrating Kiewit into Rinker Materials”, said Mr Clarke.”His leadership and industry experience will be missed.”Karl Watson, Jr. has been Chief Executive of Readymix since December 2001, heading a teamwhich has significantly increased Readymix’s operating earnings over that period. As President of Rinker Materials West, he will be based in Phoenix, Arizona and report to Mr. Clarke.Rinker Materials West Division has revenues of more than US$700 million, 2,900 employees andannual production of 28 million tonnes (31 million tons) of aggregates, 4.9 million metres3 (6.4 million yards3) of premix concrete and 3.6 million tonnes (four million tons) of asphalt.Sharon DeHayes has headed the US$900 million revenue Florida Materials (concrete andconcrete block) and Gypsum Supply division since late 2001, during which time profits andmargins have grown strongly. The business has recently begun a strategic expansion into newmarkets in northern and central Florida.

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