POWER OF ATTORNEY FOR FILINGS UNDER
	   THE SECURITIES ACT OF 1933, AS AMENDED AND
	THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED

Know all by these presents, that the undersigned hereby constitutes and
appoints the Secretary and any Assistant Secretary of Minerals
Technologies Inc. (the "Company"), acting singly, with full power of
substitution,  as the undersigned's true and lawful attorneys-in-fact and
agents to:

(1)	execute for and on behalf of the undersigned, in the
undersigned's capacity as an officer and/or director of the
Company, all documents, certificates, instruments, statements,
filings and agreements ("documents") to be filed with or delivered
in accordance with the Securities Act of 1933, as amended (the
"Securities Act"), and the Securities Exchange Act of 1934, as
amended (the "Exchange Act"), and the rules and regulations
thereunder;

(2)	do and perform any and all acts for and on behalf of the
undersigned that may be necessary or desirable to complete and
execute and timely file any such documents with the United States
Securities and Exchange Commission (the "SEC") and any stock
exchange or similar authority; and

(3)	take any other action of any type whatsoever that, in the
opinion of such attorneys-in-fact, may be necessary or desirable in
connection with the foregoing authority, it being understood that
the documents executed by such attorneys-in-fact on behalf of the
undersigned pursuant to this Power of Attorney shall be in such
form and shall contain such terms and conditions as such
attorneys-in-fact may approve.

The undersigned hereby grants to such attorneys-in-fact full power and
authority to do and perform any and every act and thing whatsoever
requisite, necessary, or proper to be done in the exercise of any of the
rights and powers herein granted, as fully to all intents and purposes as
the undersigned might or could do if personally present, with full power
of substitution or revocation, hereby ratifying and confirming all that
such attorneys-in-fact substitute or substitutes, have lawfully done or
cause to be done or shall lawfully do or cause to be done by virtue of
this Power of Attorney and the rights and powers herein granted. The
undersigned acknowledges that the foregoing attorneys-in-fact, in
serving in such capacity at the request of the undersigned, are not
assuming any of the undersigned's responsibilities to comply with the
Securities Act and the Exchange Act.

All pre-existing Powers of Attorney granted to the persons designated
above are hereby revoked.  This Power of Attorney shall remain in full
force and effect until the undersigned is no longer required to file
documents under the Securities Act and the Exchange Act with respect
to the undersigned's holdings of and transactions in securities issued by
the Company, unless earlier revoked by the undersigned in a signed
writing delivered to the foregoing attorneys-in-fact. This Power of
Attorney may be filed with the SEC as a confirming statement of the
authority granted herein.

IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this 17th day of January 2017.

			/s/ Matthew E. Garth
			________________________________________
			Matthew E. Garth