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Aurizon Announces an Updated Mineral Resource Estimate for NioGold's Marban Deposit

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----------------------------------------------------------------------------                                                                   Average  Cut-off Grade                             Grade        Gold     Metal Loss     (Au g/t)       Category   Tonnes(1) (capped)(2) (capped)(3)     due                                           (g/t Au)    (Ounces)   to Capping----------------------------------------------------------------------------       0.35   (Base case)      Measured   8 650 000     1.72        479 000     9.1%                   Indicated  12 050 000     1.48        574 000    25.5%                 -----------------------------------------------------------                      M+I     20 700 000     1.58      1 053 000    18.8%                    Inferred   3 780 000     1.60        194 000    65.9%----------------------------------------------------------------------------       0.5          Measured   8 500 000     1.75        477 000     9.1%                   Indicated  11 990 000     1.49        573 000    25.5%                 -----------------------------------------------------------                      M+I     20 490 000     1.59      1 050 000    18.9%                    Inferred   3 780 000     1.6         194 000    65.9%----------------------------------------------------------------------------       1.0          Measured   6 940 000     1.96        437 000     9.9%                   Indicated   9 360 000     1.67        502 000    28.1%                 -----------------------------------------------------------                      M+I     16 300 000     1.79        938 000    20.7%                    Inferred   3 090 000     1.77        176 000    67.5%----------------------------------------------------------------------------



1: Rounded to nearest 10 thousand.
2: High value capped at 25 g/t Au on assays.
3: Rounded to nearest 1 thousand.

Table 3: Marban Deposit - Underground Mineral Resource (Outside the pit shell)


----------------------------------------------------------------------------                                     Grade        Gold    Average Metal LossCut-off Grade  Category Tonnes(1) (capped)(2) (capped)(3)         due   (Au g/t)                         (g/t Au)    (Ounces)      to Capping----------------------------------------------------------------------------     2.0 (Base case)   Measured  360 000      3.03       35 000          12.5%              Indicated  620 000      2.70       53 000          18.5%             ---------------------------------------------------------------                 M+I     980 000      2.82       89 000          16.0%               Inferred  800 000      2.68       69 000          17.9%----------------------------------------------------------------------------     2.5       Measured  220 000      3.55       25 000          13.8%              Indicated  290 000      3.26       30 000          23.1%             ---------------------------------------------------------------                 M+I     510 000      3.39       55 000          19.1%               Inferred  390 000      3.20       40 000          24.5%----------------------------------------------------------------------------     3.0       Measured  130 000      4.09       17 000          15.0%              Indicated  160 000      3.71       19 000          26.9%             ---------------------------------------------------------------                 M+I     290 000      3.88       36 000          27.8%               Inferred  190 000      3.73       22 000          24.1%----------------------------------------------------------------------------

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