According to Bloomberg Businessweek:
Liberty Metals & Mining Holdings, LLC was incorporated in 2009 and is based in Boston, Massachusetts. Liberty Metals & Mining Holdings, LLC operates as a subsidiary of Liberty Mutual Holding Company, Inc.
According to Liberty Mutual:
Since 1912, we at Liberty Mutual have committed ourselves to providing broad, useful and competitively-priced insurance products and services to meet our customers' ever-changing needs.
Our delivery on this commitment is the reason we're now the third largest property and casualty insurer in the U.S. based on 2011 direct premium written according to the National Association of Insurance Commissioners, why we’ve earned an A.M. Best Co. ‘A’ (Excellent) rating, and why we have the breadth, depth and financial strength that you can always depend on - in the United States and around the world.