EXHIBIT 21

SUBSIDIARIES AS OF JANUARY 31, 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. Calizas Industriales del Carmen, S.A. de C.V. CalMat Co. Calmat Leasing Company, LLC Central Division Logistics, LLC Chesapeake Marine Partnership D C Materials, Inc. Florida Cement, 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 Mideast Division Logistics, LLC Mountain West Logistics, LLC Rancho Piedra Caliza, S.A. de C.V. Rapica Servicios Tecnicos Y Administrativos, S.A. de C.V. 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 VCA Shipping Services, LLC VGCM, LLC Virginia Concrete Company, LLC Vulcan Aggregates Company, LLC Vulcan Asphalt, LLC Vulcan Concrete, LLC Vulcan Construction Materials, LLC Vulcan Gulf Coast Materials, LLC Vulcan Lands, Inc. Vulcan Shipping Company, Limited		Delaware Delaware Delaware Delaware Delaware Delaware Delaware Nova Scotia Mexico Delaware Delaware Delaware Maryland District of Columbia Delaware Florida Bahamas Bahamas Delaware Delaware Delaware Delaware Delaware Delaware Delaware Delaware Mexico Mexico Delaware Delaware Delaware Mexico Mexico Delaware Delaware Delaware Delaware Delaware Delaware Delaware Delaware Delaware Delaware Delaware Delaware North Carolina 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

Exhibit 21