Exhibit 4.6 REVOLVING CREDIT AGREEMENT THIS REVOLVING CREDIT AGREEMENT, dated as of December 20, 2005, among the following: (I) OM GROUP, INC., a Delaware corporation (herein, together with its successors and assigns, the "BORROWER"); (II) the lending...Revolving Credit Agreement • March 9th, 2006 • Om Group Inc • Secondary smelting & refining of nonferrous metals • Ohio
