In 1978, the company Baron Philippe de Rothschild officially announced their joint venture with Robert Mondavi to create Opus One Winery in Oakville, California. The 1990s saw large-scale expansion in the Americas under the leadership of President Cor Dubois, with the region eventually contributing almost half of the company's turnover. In 1998, Baron Philippe de Rothschild SA teamed up with Concha y Toro of Chile to produce a quality premium red wine in a new winery/bodega built in Chile's Maipo Valley: Almaviva. The same year saw the launch of Escudo Rojo, a fine Chilean branded wine.