EXHIBIT 21

SUBSIDIARIES AS OF DECEMBER31, 2018

	State or Other Jurisdiction of Incorporation or Organization		% Owned Directly or Indirectly by Vulcan
Aggregates USA, LLC Aggregates USA (Augusta), LLC Aggregates USA (Macon), LLC Aggregates USA (Savannah), LLC Aggregates USA (Sparta), LLC Arundel Company, LLC Azusa Rock, LLC Black Point Aggregates, Inc. Calhoun Asphalt Company, Inc. Calizas Industriales del Carmen, S.A. de C.V. CalMat Co. Central Division Logistics, LLC Chem-Marine Corporation of South Carolina DMG Equipment Company, LLC Florida Rock Industries, Inc. Freeport Aggregates Limited FRI Bahamas Ltd. Fulton Concrete Company, LLC Harper Brothers, LLC Heritage Logistics, LLC Legacy Vulcan, LLC Maryland Rock Industries, LLC Maryland Stone, LLC McCartney Construction Company, Inc. McCartney Construction Company, LLC Mideast Division Logistics, LLC Mountain West Logistics, LLC North American Recycling and Crushing, LLC Rancho Piedra Caliza, S.A. de C.V. Rapica Servicios Tecnicos Y Administrativos, S.A. de C.V. R.  C. Smith Companies, LLC RECO Transportation, LLC S & G Concrete Company, LLC Salisbury Towing, LLC Servicios Integrales, Gestoria Y Administracion, S.A. de C. V. Soportes Tecnicos Y Administrativos, S.A. de C.V. Southeast Division Logistics, LLC Southern Gulf Coast Division Logistics, LLC Statewide Transport, LLC TCS Materials, LLC Triangle Rock Products, LLC VGCM, B.V. Virginia Concrete Company, LLC Vulcan Aggregates Company, LLC Vulcan Asphalt, LLC Vulcan Concrete, LLC Vulcan Construction Materials, LLC Vulcan Gulf Coast Materials, LLC Vulcan International, B.V. Vulcan Lands, Inc. Vulica Shipping Company, Limited		Delaware Delaware Delaware Delaware Delaware Delaware Delaware Nova Scotia Alabama Mexico Delaware Delaware South Carolina Delaware Florida Bahamas Bahamas Delaware Delaware Delaware Delaware Delaware Delaware Alabama Alabama Delaware Delaware Delaware Mexico Mexico Delaware Delaware Delaware Delaware Mexico Mexico Delaware Delaware Delaware Delaware Delaware Netherlands Delaware Delaware Delaware Delaware Delaware North Carolina Netherlands New Jersey Bahamas	100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100

Exhibit 21