Dairy plant managers held in poisoned milk probe

Three dairy plant managers and one milk powder dealer in central China were arrested today for allegedly selling milk products tainted with the industrial chemical melamine, shortly after the government launched a 10-day crackdown.

The chemical, which is used to manufacture plastics and fertilizer, became a household name in China in 2008 when six children died and 300,000 became ill after drinking tainted baby formula.