Norsemont Mining Announces Constancia Project Drill Results



    Highlights include: 146 meters at 0.77%Cu, 0.026 % Mo (1.01% CuEq);
    96 meters at 0.92%Cu (1.04% CuEq); 79.9 meters at 0.95% Cu (1.02% CuEq);
    78.9 meters at 0.65% Cu (0.76% CuEq)

    Shares Issued and Outstanding: 48,489,147
    TSX: NOM
    BVL: NOM

    TORONTO and LIMA, Peru, March 25 /CNW/ - Norsemont Mining Inc. ("the
Company") (TSX: NOM, BVL: NOM) today announced additional results (Table 1
below) from the ongoing Phase III drill program at the Constancia
copper-molybdenum-silver porphyry project in southern Peru.
    Norsemont currently has six drill rigs at the Constancia site and has
completed more than 14,800 meters of drilling since the last release of drill
results on December 10, 2007. Since the last resource estimate by Snowden and
Associates disclosed on March 29, 2007, the majority of the drilling has been
infill drilling. More recently, Norsemont has undertaken extensive definition
drilling to establish the limits and peripheries of the main zones of
mineralisation. Some of this drilling has been in areas of either lower grade
or narrower intercepts, which has to be completed for the pit optimisation
work in ongoing engineering studies. Consequently, only the highlights have
been tabled in this release with the full results (together with location map)
available on the Company's website (www.norsemont.com).
    Commenting on the results, Norsemont's President and Chief Operating
Officer Bob Baxter said: "Our Constancia drilling program continues to return
excellent results in the mineralised zones. The definition drilling is also
providing information essential for our continuing engineering studies. As the
infill and definition drilling at the Constancia and San Jose zones is
completed, Norsemont will commence drilling at newly discovered anomalies in
the immediate vicinity."
    The drilling program and geological studies at the Constancia project are
reviewed and the results are approved by Leonardo Diaz (MAusIMM), Norsemont's
Qualified Person under NI 43-101. Core samples are cut with a diamond saw,
with one-half of the core placed in sealed bags and shipped to ALS Chemex
Assay Labs in Lima, Peru. The program includes an extensive quality control
program for assaying, which includes the systematic use of standards, blanks,
and field duplicate samples. Secondary laboratories are also used for
check-assaying. All intersections were determined using a rolling 0.2% copper
cut-off and up to 5 meters of internal waste. Due to the disseminated
characteristics of the deposit and homogeneity of the mineralisation, all
intersections are to be considered true width.
    Full disclosure of all 43-101 compliant drill results conducted on the
project to date that have or will be used in resource estimations are
available on the Company's website (www.norsemont.com) under "Constancia
Project" together with a drill-hole location map.

    
    Table 1: Significant Copper Intersections at the Constancia Project
    -------------------------------------------------------------------------
    HOLE_ID   Az    Dip    Length  From    To    COG  CuT    Mo    Ag   CuEQ
                                                      (%)    (%)  (ppm) (%)
    -------------------------------------------------------------------------
    CO-07-166 80       -83  78.90  59.10 138.00  0.2  0.65  0.011  4.84 0.76
                 including  48.90  59.10 108.00  0.3  0.84  0.012  5.97 0.97
                      also  30.90  59.10  90.00  0.4  1.07  0.014  4.57 1.20
                       and  26.90  59.10  86.00  0.5  1.19  0.015  4.94 1.34
                 Including  10.00 126.00 136.00  0.3  0.55  0.023  4.82 0.74
                            22.00 160.00 182.00  0.3  0.62  0.003  2.52 0.67
                 including  18.00 164.00 182.00  0.4  0.61  0.002  2.14 0.64
    -------------------------------------------------------------------------

    -------------------------------------------------------------------------
    CO-07-170 98       -79 195.30  88.00 283.30  0.2  0.41  0.015  4.04 0.54
                 including  71.90  92.10 164.00  0.3  0.55  0.016  3.98 0.69
                      also  59.90  92.10 152.00  0.4  0.47  0.014  3.18 0.59
                       and  13.90  92.10 106.00  0.5  1.04  0.024  4.12 1.23
                      also  14.00 190.00 204.00  0.3  0.28  0.010  3.44 0.38
                       and  56.00 210.00 266.00  0.3  0.38  0.020  4.91 0.56
                 including  24.00 234.00 258.00  0.4  0.42  0.023  5.67 0.62
    -------------------------------------------------------------------------

    -------------------------------------------------------------------------
    CO-07-173  2       -73  79.90   0.00  79.90  0.2  0.95  0.008  2.14 1.02
                 including  28.00   0.00  28.00  0.3  0.42  0.008  3.32 0.51
                      also  43.90  36.00  79.90  0.3  1.42  0.010  1.58 1.50
                 including  41.90  38.00  79.90  0.4  1.39  0.010  1.51 1.46
                      also  27.90  52.00  79.90  0.5  1.97  0.015  2.17 2.09
                       and  19.60  58.00  77.60    1  2.65  0.017  2.61 2.79
                            22.85 117.15 140.00  0.2  1.02  0.006  1.83 1.08
                 including  18.35 117.15 135.50  0.5  1.24  0.007  1.95 1.30
                      also  12.85 117.15 130.00    1  1.57  0.007  2.07 1.64
                            16.00 218.00 234.00  0.2  0.27  0.005  4.96 0.35
                            16.00 240.00 256.00  0.2  0.32  0.002  1.92 0.36
    -------------------------------------------------------------------------

    -------------------------------------------------------------------------
    CO-07-176 26       -74 146.00 140.00 286.00  0.2  0.77  0.026  6.56 1.01
                 including 143.55 140.00 283.55  0.3  0.75  0.023  6.11 0.96
                      also  47.65 141.10 188.75  0.4  1.01  0.002  7.39 1.08
                       and  20.20 168.55 188.75    1  1.15  0.001  7.34 1.22
                      also  12.00 196.00 208.00  0.4  0.47  0.029  3.85 0.70
                       and  45.55 238.00 283.55  0.4  0.93  0.038  8.14 1.26
                 including  21.35 262.20 283.55  0.5  1.57  0.033 14.24 1.92
                      also  19.85 263.70 283.55    1  1.55  0.031 13.60 1.88
                            18.00 368.00 386.00  0.2  0.20  0.007  1.14 0.26
    -------------------------------------------------------------------------

    -------------------------------------------------------------------------
    CO-07-177 25       -69  32.00  14.00  46.00  0.2  0.43  0.006  5.40 0.52
                 including  21.20  20.80  42.00  0.3  0.56  0.007  5.21 0.65
                      also  18.95  20.80  39.75  0.5  0.54  0.005  4.79 0.62
                            68.50  79.50 148.00  0.2  0.60  0.017  3.39 0.75
                 including  64.50  79.50 144.00  0.3  0.62  0.017  3.46 0.76
                      also  44.50  79.50 124.00  0.4  0.69  0.014  3.82 0.82
                            32.00 154.00 186.00  0.2  0.23  0.016  2.83 0.36
                            15.05 223.95 239.00  0.3  0.84  0.021  8.29 1.05
                            78.00 250.00 328.00  0.2  0.30  0.003  1.25 0.33
                 including  30.00 280.00 310.00  0.3  0.45  0.003  1.83 0.49
                      also  18.00 286.00 304.00  0.4  0.42  0.002  1.76 0.45
    -------------------------------------------------------------------------

    -------------------------------------------------------------------------
    CO-07-178 54       -65 112.40  21.60 134.00  0.2  0.45  0.011  7.63 0.60
                 including  51.30  36.00  87.30  0.3  0.52  0.013  8.21 0.68
                      also  38.00  36.00  74.00  0.4  0.53  0.011  7.39 0.67
                       and  28.00  44.00  72.00  0.5  0.56  0.010  7.31 0.69
                       and  36.00  98.00 134.00  0.3  0.39  0.008  6.82 0.50
                 Including  31.35  98.00 129.35  0.4  0.42  0.009  7.66 0.55
                            57.10 160.90 218.00  0.2  0.45  0.009  3.73 0.55
                 Including  23.10 160.90 184.00  0.3  0.56  0.005  6.09 0.65
                      also  19.10 160.90 180.00  0.4  0.55  0.005  5.83 0.63
                       and  19.10 160.90 180.00  0.5  0.50  0.004  5.28 0.58
                      also  26.00 190.00 216.00  0.3  0.38  0.013  1.88 0.48
                           196.00 232.00 428.00  0.2  0.52  0.025  2.83 0.71
                 including 182.00 238.00 420.00  0.3  0.52  0.024  2.76 0.71
                      also  60.00 246.00 306.00  0.4  0.83  0.041  3.91 1.14
                       and  44.00 248.00 292.00  0.5  0.92  0.046  4.33 1.26
                       and  14.00 264.00 278.00    1  1.88  0.094  9.25 2.59
                       and  40.00 316.00 356.00  0.4  0.32  0.011  1.46 0.41
    -------------------------------------------------------------------------

    -------------------------------------------------------------------------
    CO-07-182 74       -74  14.80   0.00  14.80  0.2  0.58  0.006  4.78 0.67
                            28.00  26.00  54.00  0.2  0.20  0.007  2.53 0.27
                            18.00 188.00 206.00  0.2  0.23  0.005  2.27 0.28
                           138.45 268.00 406.45  0.2  0.44  0.009  2.83 0.52
                 including  18.00 270.00 288.00  0.3  0.24  0.006  1.33 0.29
                       and  98.45 308.00 406.45  0.3  0.51  0.009  3.37 0.60
                 including  82.45 324.00 406.45  0.4  0.50  0.008  3.38 0.58
                      also  50.45 356.00 406.45  0.5  0.57  0.009  4.07 0.66
    -------------------------------------------------------------------------

    -------------------------------------------------------------------------
    CO-08-185 95       -72  26.00 106.00 132.00  0.2  0.34  0.014  5.40 0.48
                 including  12.00 118.00 130.00  0.3  0.44  0.019  3.96 0.60
                           176.15 138.00 314.15  0.2  0.43  0.008  5.90 0.53
                 including  16.00 158.00 174.00  0.3  0.24  0.008  3.27 0.32
                       and 132.15 182.00 314.15  0.3  0.47  0.007  6.43 0.58
                 including  48.00 202.00 250.00  0.4  0.46  0.007  9.08 0.59
                      also  31.70 218.30 250.00  0.5  0.52  0.007 11.93 0.68
                       and  54.15 260.00 314.15  0.4  0.57  0.007  6.35 0.67
                 including  24.00 260.00 284.00  0.5  0.60  0.008  7.69 0.72
                      also  14.15 300.00 314.15  0.5  0.51  0.003  3.82 0.57
                            60.60 387.40 448.00  0.2  0.29  0.001  2.90 0.33
                 including  26.00 414.00 440.00  0.3  0.30  0.001  3.07 0.33
    -------------------------------------------------------------------------

    -------------------------------------------------------------------------
    CO-08-186 325      -70  55.15  12.30  67.45  0.2  1.22  0.002  8.49 1.31
                 including  33.70  12.30  46.00  0.5  1.10  0.002  7.52 1.19
                      also  16.05  51.40  67.45  0.5  1.77  0.001 11.80 1.88
                            14.30 171.65 185.95  0.2  0.22  0.001  8.66 0.30
    -------------------------------------------------------------------------

    -------------------------------------------------------------------------
    CO-08-188 325      -70  96.25  23.75 120.00  0.2  0.59  0.011  3.32 0.69
                 including  21.45  23.75  45.20  0.5  0.82  0.010  1.57 0.90
                       and  67.85  52.15 120.00  0.4  0.50  0.008  3.56 0.59
                 including  36.30  52.15  88.45  0.5  0.53  0.010  3.57 0.63
                       and  20.00  96.00 116.00  0.5  0.45  0.005  2.98 0.51
                            17.70 286.00 303.70  0.3  0.75  0.005  6.53 0.85
                 including  16.10 287.60 303.70  0.5  0.80  0.006  7.00  0.90
    -------------------------------------------------------------------------

    -------------------------------------------------------------------------
    CO-08-189 324      -71  96.00  12.00 108.00  0.2  0.92  0.011  4.79 1.04
                 including  94.00  14.00 108.00  0.3  0.91  0.011  4.73 1.03
                      also  62.00  46.00 108.00  0.4  1.23  0.013  5.78 1.37
                       and  41.65  64.35 106.00    1  1.45  0.016  6.47 1.61
    -------------------------------------------------------------------------

    -------------------------------------------------------------------------
    CO-08-192 136      -72  39.65  38.35  78.00  0.2  0.28  0.013  1.59 0.38
                           148.00 100.00 248.00  0.2  0.45  0.007  3.45 0.53
                 including  26.00 102.00 128.00  0.3  0.35  0.010  1.05 0.42
                      also  16.00 112.00 128.00  0.4  0.28  0.008  0.93 0.34
                       and  90.00 134.00 224.00  0.3  0.49  0.006  4.46 0.57
                 including  32.00 134.00 166.00  0.4  0.64  0.009  4.10 0.73
                      also  32.00 192.00 224.00  0.4  0.41  0.006  4.79 0.49
                       and  14.00 232.00 246.00  0.3  0.53  0.004  2.57 0.59
                 including  12.00 234.00 246.00  0.4  0.56  0.005  2.60 0.62
    -------------------------------------------------------------------------

    -------------------------------------------------------------------------
    

    Note 1: Copper equivalent values (CuEQ) are estimated using long-term
metal prices including: copper US$1.80 per lb, molybdenum US$12.00 per lb, and
silver US$11 per oz. Adjustment factors to account for differences in relative
metallurgical recoveries for copper, molybdenum and silver will depend upon
the completion of definitive metallurgical testing. CuEQ equals Cu percent
plus Mo percent times (8.00/1.20) plus Ag grams per tonne times
0.24/(1.20(*)22.05).

    Norsemont Mining is a Canadian mineral exploration and development
company focused on the Constancia Cu-Mo-Ag deposit in southern Peru. Norsemont
currently controls an undivided 81% interest in the Constancia Project, which
interest is set to increase to 100% by March 31, 2008 through a final option
payment of US$8M to Rio Tinto.
    The Constancia Project currently has a 43-101 compliant indicated
resource of 70M tonnes at 0.53% Cu (0.8 Billion lbs Cu) and an inferred
resource of 250.2M tonnes at 0.51% Cu (2.8 Billion lbs Cu). A recently
completed scoping study anticipates a project producing in excess of 90,000
tonnes of copper annually. The study indicates the project has a net present
value of $530 million and an internal rate of return of 25.3 percent. The
following long-term commodity price assumptions were used in the study: copper
$1.80 per pound, molybdenum $12 per pound and silver $11 per ounce. The full
study, dated December 11, 2008, and titled "Preliminary Assessment of the
Constancia Project, Department of Cusco, Peru" is available for viewing on
SEDAR.
    The technical information provided in this press release was reviewed and
approved by Robert. W. Baxter (MAusIMM), the President and a director of the
Company and a qualified person for the purposes of National Instrument 43-101.




For further information:

For further information: Patrick Evans, Norsemont Mining, Phone: (416)
670-5114, E-Mail: investors@norsemont.com, Web Site: www.norsemont.com

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