UPDATE 1-Levin's committee plans showdown on banks in commodities
November 06, 2014 at 18:11 PM EST
WASHINGTON, Nov 6 (Reuters) - U.S. Senator Carl Levin's powerful committee will hold a two-day hearing later this month on Wall Street banks' ownership of physical commodities and assets from pipelines to warehouses, touching off a two-year probe into potential market abuses.