POWER OF ATTORNEY

STATE OF ALABAMA
COUNTY OF JEFFERSON

      The undersigned director of Vulcan Materials
Company, a New Jersey corporation, hereby
nominates, constitutes and appoints Michael R.
Mills, Jerry F. Perkins Jr., C. Samuel Todd and
Jeanne Barlow, or any of them, the true and
lawful attorneys of the undersigned to prepare,
based on information provided by said director,
and sign the name of the undersigned to (1) any
Form 3 required to be filed with the Securities
and Exchange Commission (the "SEC") under the
Securities and Exchange Act of 1934, as amended
(the "Exchange Act"), for and on behalf of said
director; (2) any Form 4 required to be filed
with the SEC under the Exchange Act, for and on
behalf of said director and any and all
amendments to said reports; and (3) any Form 5 of
said director to be filed with the SEC under the
Exchange Act, for and on behalf of said director
and any and all amendments to said reports.

      The undersigned hereby grants to said
attorneys full power of substitution,
resubstitution and revocation, all as fully as
the undersigned could do if personally present,
hereby ratifying all that said attorneys or their
substitutes may lawfully do by virtue hereof.

      IN WITNESS WHEREOF, the undersigned director
of Vulcan Materials Company has executed this
Power of Attorney this 14th day of February, 2017.


/s/ David P. Steiner
David P. Steiner