 By 2011, 578 Smithfield facilities (95 percent of the company's global operations) were ISO 14001-certified.Smithfield subsidiary Murphy-Brown reached an agreement in 2006 with the Waterkeeper Alliance, once one of Smithfield's biggest critics, to enhance environmental protection at the Murphy-Brown's facilities in North Carolina.In 2009 the company said it had reduced its emissions since 2007, including its greenhouse-gas emissions by four percent; it attributed this to the divestiture of the beef group.