US dairy giant Dean Foods revealed yesterday [Monday] that it expects to generate annual savings of at least US$60m in 2002 as a result of its acquisition by Suiza Foods Corp last December.  In a filing with the Securities and Exchange Commission (SEC), the Dallas-based company said: "As a result of our acquisition of Old Dean, we expect to achieve annual cost savings of at least US$60m in 2002, increasing to at least US$120m by the end of 2004."