NEW YORK -- Pressures from labor costs may be the industry's greatest challenge as it competes with Wal-Mart and other non-union operators, according to participants at SN's eighth annual Financial Analysts' Roundtable here.

Those concerns, which the analysts expressed when the roundtable took place in early August, have been realized by the industry in the last few weeks with labor strikes in Los Angeles, St. Louis and West Virginia (see related strike news in this

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