UNITED STATES
 SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 6-K
REPORT OF FOREIGN PRIVATE ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16 OF
THE SECURITIES EXCHANGE ACT OF 1934
For the month of March 2017
Commission File No. 001-35278
PRIMERO MINING CORP.
 (Translation of registrant's name into English)
Suite 2100, 79 Wellington Street West,
TD South Tower, P.O Box 139
Toronto, Ontario
 M5K 1H1 Canada 
 (Address of principal executive office)
Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F
Form 20-F [   ]    Form 40-F [X]
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1) [ ]
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7) [ ]
Indicate by check mark whether the registrant, by furnishing the information contained in this Form, is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.
Yes [   ]    No [X]
If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82-__________

SUBMITTED HEREWITH

Exhibits	 	
 99.1	News Release dated March 31, 2017	

SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
Date: March 31, 2017
PRIMERO MINING CORP.

“Kevin Jennings”	 	
 	 	
Kevin Jennings	 	
Chief Financial Officer	 	

PRIMERO CLOSES EXTENSION TO REVOLVING CREDIT FACILITY
(Please note that all dollar amounts in this news release are expressed in U.S. dollars unless otherwise indicated.)
Toronto, Ontario, March 31, 2017 – Primero Mining Corp. (“Primero” or the “Company”) (TSX:P, NYSE:PPP) announced today that, further to its news release dated March 24, 2017, it has closed the extension of the maturity of its $75 million revolving credit facility (“RCF”) with its syndicate of lenders. The RCF will now mature on November 23, 2017 and will exclude financial covenants until the extended maturity date. The RCF continues to be secured by a charge over substantially all of the Company's assets and is now guaranteed by Silver Wheaton for a fee of $2.6 million payable at maturity. Today, Primero drew down $10 million from the RCF, which now has $60 million drawn. An additional $15 million remains available for drawdown, subject to Silver Wheaton’s consent, unless the proceeds are used solely in connection with the restart of the San Dimas operations.
About Primero
 Primero Mining Corp. is a Canadian-based precious metals producer that owns 100% of the San Dimas gold-silver mine and the Cerro del Gallo gold-silver-copper development project in Mexico and 100% of the Black Fox mine and adjoining properties in the Township of Black River-Matheson near Timmins, Ontario, Canada. Primero offers immediate exposure to un-hedged, below average cash cost gold production with a substantial resource base in politically stable jurisdictions. The Company is focused on becoming a leading intermediate gold producer by building a portfolio of high quality, low cost precious metals assets in the Americas.
Primero’s website is www.primeromining.com .
For further information, please contact:

Evan Young	
Manager, Investor Relations	
Tel: (416) 814-2694	
eyoung@primeromining.com