NioGold Mining Corporation
TSX VENTURE : NOX
FRANKFURT : NG1

NioGold Mining Corporation

September 25, 2007 08:22 ET

NioGold Mining Corporation: Drilling Proves Strong Potential Around Former Marban Mine

VAL-D'OR, QUEBEC--(Marketwire - Sept. 25, 2007) - NioGold Mining Corporation (TSX VENTURE:NOX)(FRANKFURT:NG1) ("NioGold") reports on results of the 2007 drilling program on the Marban Block property, located in the Malartic Gold Camp, Quebec. Holes MB-07-013 and MB-07-014 and the extension of hole MB-07-007 generate solid results along the depth extent of the prospective units hosting the former Marban Mine orebodies (Mine Sequence). The holes returned best intervals of:

MB-07-007: 15.5 g/t Au over 1.8 m

MB-07-013: 6.5 g/t Au over 3.0 m and 2.4 g/t Au over 9.0 m (incl. 5.2 g/t Au over 2.0 m)

MB-07-014: 7.9 g/t Au over 1.0 m, 18.5 g/t Au over 0.5 m, 8.3 g/t Au over 1.5 m, and 6.0 g/t Au over 1.0 m

To date, NioGold has completed 20 drill holes for 9,120 metres (MB-06-001 to MB-07-020) drilled on four north-south sections located east of the Marban Mine shaft. Previously reported results (MB-06-001 to MB-07-012) and new results received from holes MB-07-013, MB-07-014 and the extension of hole MB-07-007, tabulated below, indicate strong potential to outline new gold deposits near surface and along the depth extent of the Mine Sequence. Readers are invited to review the Marban Surface Plan and Marban Section 450E available at www.niogold.com/marban. Assay results for holes MB-07-015 to MB-07-020 are pending.

The 2007 drilling continues to expand on the newly discovered gold mineralisation near surface and along the depth extent of the Mine Sequence. The faulted off east and west extent of the Marban Mine orebodies is a priority target still to be tested.

Norlartic-Kierens Resource Drilling

Apart from the Marban Mine sector, a drill rig was mobilized to the northern part of the Marban Block property where 12,000 metres are planned to expand on the gold resources defined in proximity to the former Norlartic and Kierens Mines. In June, NioGold released National Instrument 43-101 compliant indicated and inferred resources estimates of 72,000 and 270,000 ounces gold, respectively (see News Release dated June 28, 2007). Readers are invited to review the Norlartic Kierens Section available at www.niogold.com/marban for the location of the main drill target areas.



Marban Mine Area 2006-07 Drilling - Best Results

--------------------------------------------------------------------------
Mine Core Grade
Line Station Depth Sequence From To Length (g/t
Hole # (m) (m) Az Dip (m) Target (m) (m) (m) Au)
--------------------------------------------------------------------------
MB-06 5+00 E 0+48 S 170 -85 618.0 near 96.6 123.0 26.4 3.62
-001 deg- deg- surface
rees rees including 102.6 106.6 4.0 10.78
including 118.6 119.6 1.0 8.07
downdip 467.0 510.0 43.0 1.30
including 500.0 510.0 10.0 2.93
including 508.0 510.0 2.0 6.87
--------------------------------------------------------------------------
MB-06 5+00 E 0+48 S 178 -69 149.6 near 108.2 110.50 2.3 8.02
-002 deg- deg- surface
rees rees
--------------------------------------------------------------------------
MB-07 4+50 E 1+56 S 182 -60 134.6 near NSA
-003 deg- deg- surface
rees rees
--------------------------------------------------------------------------
MB-07 4+50 E 0+73 S 182 -50 170.6 near 58.0 65.0 7.0 1.57
-004 deg- deg- surface
rees rees 144.2 145.2 1.0 6.37
--------------------------------------------------------------------------
MB-07 4+50 E 0+50 S 181 -59 221.6 near 93.0 103.0 10.0 2.93
-005 deg- deg- surface
rees rees including 96.0 100.0 4.0 5.38
121.0 121.8 0.8 9.59
--------------------------------------------------------------------------
MB-07 4+50 E 0+02 N 180 -60 494.0 granodi- 39.4 40.1 0.6 3.55
-006 deg- deg- orite
rees rees near 147.0 154.0 7.0 4.35
surface
including 151.2 153.0 1.8 11.97
downdip 345.0 348.0 3.0 6.18
--------------------------------------------------------------------------
MB-07 4+50 E 0+55 N 184 -61 494.6 downdip 367.0 368.0 1.0 5.61
-007 deg- deg-
rees rees 436.8 438.6 1.8 15.45
--------------------------------------------------------------------------
MB-07 4+50 E 0+55 N 187 -83 667.6 granodi- 68.0 68.9 0.9 3.70
-008 deg- deg- orite
rees rees near 179.0 180.6 1.6 4.29
surface
downdip 413.7 416.1 2.5 4.15
421.0 422.6 1.6 6.57
491.0 499.0 8.0 2.95
including 493.0 494.0 1.0 13.70
--------------------------------------------------------------------------
MB-07 4+50 E 3+16 S 182 -61 216.0 NSA
-009 deg- deg-
rees rees
--------------------------------------------------------------------------
MB-07 4+50 E 2+62 S 182 -60 254.0 updip 49.1 49.6 0.5 22.80
-010 deg- deg-
rees rees
--------------------------------------------------------------------------
MB-07 4+50 E 2+11 S 182 -61 279.0 updip 55.6 56.1 0.5 4.22
-011 deg- deg-
rees rees 61.0 64.0 3.0 3.13
--------------------------------------------------------------------------
MB-07 4+50 E 1+46 N 183 -83 783.0 granodi- 41.6 42.6 1.0 4.41
-012 deg- deg- orite
rees rees 176.0 176.7 0.7 5.00
downdip 258.4 259.0 0.6 5.82
482.0 483.0 1.0 3.80
--------------------------------------------------------------------------
MB-07 5+50 E 0+02 N 185 -63 552 downdip 317.0 317.5 0.5 4.33
-013 deg- deg-
rees rees 350.5 353.5 3.0 6.48
476.0 485.0 9.0 2.40
including 477.0 478.0 1.0 5.59
including 483.0 485.0 2.0 5.15
--------------------------------------------------------------------------
MB-07 5+50 E 0+54 N 183 -62 616.3 downdip 342.0 343.0 1.0 7.92
-014 deg- deg-
rees rees 448.4 449.6 0.5 18.5
471.6 473.10 1.5 8.31
507.0 508.0 1.0 5.95
--------------------------------------------------------------------------
Note: Reported intervals are in core lengths. Additional drilling is
needed to estimate true widths and verify the continuity of the
mineralised sections from hole to hole.


Quality Assurance / Quality Control and Qualified Persons

Diamond drill holes were drilled with NQ-size core in order to obtain larger sample volumes for the mineralised zones. The core was delivered by the drilling contractor to NioGold's facilities located at the Norlartic mine site. The core was photographed for reference, logged and mineralized sections were sawed in half. Sample lengths varied between 0.5 to 1.5 metres. The half core samples were bagged, sealed and trucked to Activation Laboratories Limited ("Actlabs") in Ancaster, Ontario, an accredited laboratory. Samples were assayed by the fire-assay method using an atomic absorption finish on a 50-gram pulp split.

A quality assurance and quality control program (QA/QC) was implemented by NioGold and the laboratory to insure the precision and reproducibility of the analytical method and results. The QA/QC program includes the insertion of standards, blanks and duplicates in the sample batches sent to the laboratory and a systematic re-assaying from the remaining coarse reject fraction by the fire-assay method with an atomic absorption finish for samples returning values of 2 to 5 g/t Au and by gravimetric finish for samples returning values greater than 5 g/t Au. As well, 10% of the pulps are sent to Bourlamaque Assay Laboratories Ltd. in Val-d'Or for check assaying.

This press release was prepared by Rock Lefrancois, P. Geo. (OGQ), the Company's Vice-President and Qualified Person as defined by National Instrument 43-101. The exploration programs are conducted under the supervision of Bertrand Brassard, M.Sc., P.Geo. (OGQ), also a Qualified Person as defined by National Instrument 43-101.

NioGold Mining Corporation - "The Golden Highway Runs Through NioGold"

NioGold Mining Corporation is a junior exploration company primarily focused on GOLD. The Company's main properties are the Camflo West and the Marban Block located in the Malartic and Val-d'Or Mining Camps, with a historic production of 25 million ounces of gold. The camps presently encompass several active advanced exploration and mine development projects such as Canadian Malartic (Osisko Exploration), Kiena (Wesdome), Midway (Northern Star Mining), Goldex (Agnico-Eagle) and Lac Herbin (Alexis Minerals). The Marban Block encompasses three former gold producers, namely the Norlartic, Kierens (First Canadian), and Marban mines that collectively produced 592,265 ounces of gold.

NioGold's experienced and qualified technical team will ensure the successful advancement of the Company's projects towards the highest quality mineral resources. NioGold invites you to visit the company website at www.niogold.com.

This Press Release includes forward-looking statements that are subject to risks and uncertainties. All statements within, other than statements of historical fact, are to be considered forward looking. There can be no assurances that such statements will prove accurate and, therefore, readers are advised to rely on their own evaluation of such uncertainties.

The TSX Venture Exchange or the Frankfurt Stock Exchange did not approve nor do not accept responsibility for the adequacy or accuracy of this news release.

Contact Information