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Martin Marietta’s Hostile Bid for Vulcan Blocked for 4 Months

Martin Marietta Materials Inc. was blocked for four months from making a hostile bid for rival gravel producer Vulcan Materials Co. after a judge ruled the company violated a confidentiality agreement.

Martin Marietta, based in Raleigh, North Carolina, offered to pay $4.7 billion in December for Birmingham, Alabama-based Vulcan, which rejected the stock-swap bid as inadequate.