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Proc-Type: 2001,MIC-CLEAR
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<SEC-DOCUMENT>0001181431-09-003475.txt : 20090120
<SEC-HEADER>0001181431-09-003475.hdr.sgml : 20090119
<ACCEPTANCE-DATETIME>20090120101117
ACCESSION NUMBER:		0001181431-09-003475
CONFORMED SUBMISSION TYPE:	3/A
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20090101
FILED AS OF DATE:		20090120
DATE AS OF CHANGE:		20090120

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NEWMARKET CORP
		CENTRAL INDEX KEY:			0001282637
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL ORGANIC CHEMICALS [2860]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			VA
		FISCAL YEAR END:			1231

	MAIL ADDRESS:	
		STREET 1:		330 S FOURTH ST
		STREET 2:		PO BOX 2189
		CITY:			RICHMOND
		STATE:			VA
		ZIP:			23218-2189

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GAMBILL MARK M
		CENTRAL INDEX KEY:			0001170913

	FILING VALUES:
		FORM TYPE:		3/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-32190
		FILM NUMBER:		09533179

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		7044553239

	MAIL ADDRESS:	
		STREET 1:		5555 CONCORD PARKWAY SOUTH
		CITY:			CONCORD
		STATE:			NC
		ZIP:			28027
</SEC-HEADER>
<DOCUMENT>
<TYPE>3/A
<SEQUENCE>1
<FILENAME>rrd230014.xml
<DESCRIPTION>FORM 3A FOR MARK GAMBILL NEW DIRECTOR
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0203</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2009-01-01</periodOfReport>

    <dateOfOriginalSubmission>2009-01-05</dateOfOriginalSubmission>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001282637</issuerCik>
        <issuerName>NEWMARKET CORP</issuerName>
        <issuerTradingSymbol>NEU</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001170913</rptOwnerCik>
            <rptOwnerName>GAMBILL MARK M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>330 SOUTH 4TH STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>RICHMOND</rptOwnerCity>
            <rptOwnerState>VA</rptOwnerState>
            <rptOwnerZipCode>23219</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>730</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The 730 NewMarket Corporation shares are held in a managed account for Mr. Gambill and were inadvertently omitted from the original filing.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ M. Rudolph West (by POA for Mark Gambill)</signatureName>
        <signatureDate>2009-01-20</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24.
<SEQUENCE>2
<FILENAME>rrd206090_233049.htm
<DESCRIPTION>POWER OF ATTORNEY FOR MARK GAMBILL
<TEXT>
<HTML>
<HEAD>
<TITLE>
rrd206090_233049.html
</TITLE>
</HEAD>
<BODY>
<PRE>
NEWMARKET CORPORATION
330 SOUTH FOURTH STREET
POST OFFICE BOX 2189
RICHMOND, VIRGINIA 23218-2189

POWER OF ATTORNEY

	Know all by these presents, that the undersigned hereby constitutes and appoints each of Steven M. Edmonds and M. Rudolph West, acting singly, the undersigned's true and lawful attorney-in-fact to:

	(1) execute in the undersigned's name and on the undersigned's behalf and submit to the U.S. Securities and Exchange Commission (the "SEC") a Form ID, including amendments thereto, and any other documents necessary or appropriate to obtain codes and passwords enabling the undersigned to make electronic filings with the SEC of reports required by Section 16(a) of the Securities Exchange Act of 1934 or any rule or regulation of the SEC promulgated thereunder;

	(2) execute for and on behalf of the undersigned, in the undersigned's capacity as an officer and/or director of NewMarket Corporation, a Virginia corporation (the "Company"), Forms 3, 4, and 5 in accordance with Section 16(a) of the Securities Exchange Act of 1934 and the rules and regulations of the SEC promulgated thereunder;

	(3) do and perform any and all acts for and on behalf of the undersigned that may be necessary or desirable to complete and execute any such Form 3, 4, or 5, complete and execute any amendment or amendments thereto, and timely file such form or amendment with the SEC and any stock exchange or similar authority; and

	(4) take any other action of any type whatsoever in connection with the foregoing that, in the opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or legally required by, the undersigned, it being understood that the documents executed by such attorney-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 attorney-in-fact may approve in such attorney-in-fact's discretion.

       The undersigned hereby grants to each such attorney-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 attorney-in-fact, or such attorney-in-fact's substitute or substitutes, 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, nor is the Company assuming, any of the undersigned's responsibilities to comply with Section 16 of the Securities Exchange Act of 1934 or the rules and regulations of the SEC promulgated thereunder.
       This Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4, and 5 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.

       IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of this 5th day of January, 2009.


									/s/ Mark M. Gambill
									-------------------
									Signature


									Mark M. Gambill
									-------------------
                                                   	Print Name








</PRE>
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</TEXT>
</DOCUMENT>
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