, a producer of construction aggregates and materials, is buying
Florida Rock Industries
( 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.