Chairman of the Congressional Domestic Policy Subcommittee, Dennis Kucinich, and Congresswoman Diane Watson sent a written request to EPA to reduce mercury pollution by tightening dental mercury regulations with Best Management Practices and amalgam separators.  They point out that dental mercury is a serious source of mercury pollution and comprises over half of all mercury in use today, amounting to over 1000 tons.  They call upon the EPA to reevaluate and update its mercury emission factors based upon more complete data and provide a plan to Congress by February 16th.