Northern Sun Enters Into Definitive Custom Milling Agreement

TORONTO, ONTARIO--(Marketwired - Mar 24, 2014) - Northern Sun Mining Corp. (formerly Liberty Mines Inc.) (TSX:NSC) has entered into a definitive custom agreement with Wallbridge Mining Company Ltd. (TSX:WM) to provide for the custom milling of ore from Wallbridge's Broken Hammer project. Pursuant to the terms of the agreement, Northern Sun will be responsible for the handling and milling of such ore. The agreement is for approximately a one year term based on a minimum of 800 tonnes per day and milling is expected to begin on or about June 30, 2014. The Company will generate both a gravity concentrate and a floatation concentrate which will then be conveyed to other smelters or refineries for further treatment. Waste from the ore after processing will be disposed of in the current tailings compound.

David Rigg, President and CEO of Northern Sun, commented: "We are excited to have finalized the custom milling agreement with Wallbridge which will provide the Company with the means to generate positive cash flow to support our regional activities. Our toll milling arrangement represents a new start for the Redstone mill and a new employment opportunity in the Timmins area. Now that we have finalized this agreement, the Company remains committed to actively pursuing the acquisition of other assets to complement its milling activities in Timmins."

Qualified Persons

The technical and scientific content of this press release has been reviewed and approved by David M. Rigg, P.Geo. and qualified person under NI 43-101. As President and CEO of Northern Sun, Mr. Rigg is not considered independent.

About Northern Sun Mining Corp.

Northern Sun owns two former producing nickel mines and a large prospective land package in the Shaw Dome area, a prospective nickel belt near Timmins, Ontario. Northern Sun owns the Redstone Mill which has operated as the only nickel concentrator in this Region. The Mill was designed with two processing circuits which are permitted to operate in tandem at 1,500 tonnes per day ("tpd"), but with the flexibility to operate independently processing two different ore types, each at 750 tpd. In 2014, the Company intends to re-open the mill to offer toll milling services to a variety of deposits in the Timmins Camp and general area. For additional information please visit our website at www.northernsunmining.ca and follow us on Facebook, LinkedIn or on Twitter @NorthernSunMine.

REGULATORY NOTES AND CAUTIONARY STATEMENTS

This document includes "forward looking statements", as defined under applicable securities laws. All statements, other than statements of historical fact, including statements regarding the impact of the custom milling agreement, the timing of the commencement of custom milling program, future plans and objectives of Northern Sun, and the timing and completion of necessary financing and its consequences are forward looking statements that involve various risks and uncertainties. There can be no assurance that such statements will prove to be accurate and actual results and future events could differ materially from those anticipated in such statements. Important factors that could cause actual results to differ materially from Northern Sun's expectations are: insolvency risks; regulatory approvals; environmental risks and other risks inherent in the mining industry, as described in Northern Sun's public filings. Forward-looking statements speak only as of the date on which they are made. Northern Sun does not undertake to publicly update any such statement, except where required by securities regulations. Accordingly, readers should not place undue reliance on forward-looking statements.

No stock exchange, securities commission or other regulatory authority has approved or disapproved the information contained here.