Molycorp (MCPIQ) DEFA14A Additional proxy soliciting materials

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 14A
Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.     )
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Filed by a Party other than the Registrant  o
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o	Preliminary Proxy Statement
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o	Definitive Proxy Statement
x	Definitive Additional Materials
o	Soliciting Material Pursuant to §240.14a-12
Molycorp, Inc.
(Name of Registrant as Specified In Its Charter)
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
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See the reverse side of this notice to obtain proxy materials and voting instructions. You are receiving this communication because you hold shares in the above named company. This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side). We encourage you to access and review all of the important information contained in the proxy materials before voting. Meeting Information Meeting Type: For holders as of: Date: Time: Location: *** Exercise Your Right to Vote *** Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meeting to Be Held on. 0000139692_1 R1.0.0.11699 MOLYCORP, INC. Annual Meeting May 31, 2012 May 31, 2012 10:00 AM MDT April 03, 2012 The Inverness Hotel and Conference Center 200 Inverness Drive West Englewood, Colorado 80112 See NOTE regarding Admission

How To Vote Please Choose One of the Following Voting Methods Vote In Person: If you choose to vote these shares in person at the meeting, you must request a "legal proxy." To do so, please follow the instructions at www.proxyvote.com or request a paper copy of the materials, which will contain the appropriate instructions. Many shareholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the box marked by the arrow available and follow the instructions. Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a voting instruction form. Before You Vote How to Access the Proxy Materials Proxy Materials Available to VIEW or RECEIVE: How to View Online: Have the information that is printed in the box marked by the arrow (located on the following page) and visit: www.proxyvote.com. How to Request and Receive a PAPER or E-MAIL Copy: If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request: 1) BY INTERNET: www.proxyvote.com 2) BY TELEPHONE: 1-800-579-1639 3) BY E-MAIL*: sendmaterial@proxyvote.com * If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow (located on the following page) in the subject line. XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX 0000139692_2 R1.0.0.11699 1. Annual Report 2. Notice & Proxy Statement Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before May 17, 2012 to facilitate timely delivery.

Voting items 0000139692_3 R1.0.0.11699 The Board of Directors recommends that you vote FOR the following: 1. Election of Directors Nominees 01 Brian T. Dolan 02 John Graell 03 Mark A. Smith The Board of Directors recommends you vote FOR the following proposal(s): 2 To approve the Molycorp, Inc. 2012 Employee Stock Purchase Plan 3 To ratify the appointment of PricewaterhouseCoopers LLP as our independent registered public accounting firm for the current fiscal year. NOTE: Such other business as may properly come before the meeting or any adjournment thereof. Admission: Upon arrival, please present photo identification and this admission ticket or other proof of ownership of Molycorp common stock as of April 3, 2012 at the registration desk. Directions: For information on how to obtain directions to be able to attend the Annual Meeting and vote in person, please contact Molycorp's Investor Relations department at IR@molycorp.com.

Voting Instructions 0000139692_4 R1.0.0.11699