Vulcan Materials

(VMC) - Get Vulcan Materials Company Report

, a producer of construction aggregates and materials, is buying

Florida Rock Industries

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( FRK) in a $4.6 billion deal.

The acquisition will be a cash and stock transaction. Florida Rock makes construction aggregates, cement, concrete and concrete products.

Shares of Florida Rock were jumping $18.54, or 39.5%, to $65.50 Tuesday morning. Vulcan was down 1.5% at $110.15.