Tyhee reports additional Nicholas Lake diamond drill results, with 6.927 grams of gold per tonne over 31.0 metres including 49.204 GPT over 3.5 m in NU019, two additional holes completed on BigSky exploration target



    TSX Venture: TDC

    VANCOUVER, Dec. 17 /CNW/ - Tyhee Development Corp. (TSX Venture, TDC)
(the "Company") today announced results from an additional 25 diamond
drillholes from Nicholas Lake Main Zone. The results continue to be as
expected, with some high-grade values over moderate widths and some broader
areas of moderate-grade material. Additionally, tungsten-rich sections
continue to be encountered. These will be assessed in a resource estimate
planned for early 2008. Significant intersections include 6.927 grams of gold
per tonne (gpt) over 31.0 metres (m) in NU019, 1.130 gpt gold over 109.0 m in
NU022 and 3.235 gpt gold over 28.5 m in NU028.

    
    Table 1. Recent results from the resampling of Nicholas Lake Main Zone.
    -------------------------------------------------------------------------
    Diamond           From           To         Width          Gold Grade
    Drillhole       (metres)      (metres)     (metres)     (grams per tonne)
    -------------------------------------------------------------------------
    N027                9.2          10.7          1.5                 8.000
    -------------------------------------------------------------------------
          and          12.0          13.5          1.5                 5.709
    -------------------------------------------------------------------------
          and          71.5          75.7          4.2                 8.252
    -------------------------------------------------------------------------
          and          84.5          86.4          1.9                24.862
    -------------------------------------------------------------------------
          and         146.2         150.2          4.0                 5.517
    -------------------------------------------------------------------------
    N077               41.0          47.0          6.0                 2.144
    -------------------------------------------------------------------------
    N093              123.5         124.5          1.0                 6.247
    -------------------------------------------------------------------------
          and         138.0         139.5          1.5                 3.546
    -------------------------------------------------------------------------
          and         159.5         164.0          4.5                 1.699
    -------------------------------------------------------------------------
          and         207.5         219.5         12.0                 4.066
    -------------------------------------------------------------------------
          and         270.5         289.5         19.0                 1.199
    -------------------------------------------------------------------------
    N094              156.0         157.5          1.5                 6.033
    -------------------------------------------------------------------------
          and         187.5         201.5         14.0                 4.793
    -------------------------------------------------------------------------
          and         220.0         241.0         21.0                 1.713
    -------------------------------------------------------------------------
          and         263.5         280.0         16.5                 0.896
    -------------------------------------------------------------------------
    N097               58.0          63.0          5.0                 3.395
    -------------------------------------------------------------------------
          and          86.5          88.0          1.5                 9.900
    -------------------------------------------------------------------------
          and         120.5         126.5          6.0                 2.062
    -------------------------------------------------------------------------
    N112              161.0         162.0          1.0                 1.847
    -------------------------------------------------------------------------
    NU001              24.5          36.5         12.0                 1.860
    -------------------------------------------------------------------------
          and          45.0          47.0          2.0                11.669
    -------------------------------------------------------------------------
          and          62.0          81.0         19.0                 1.137
    -------------------------------------------------------------------------
    NU002               4.0          20.0         16.0                 2.997
    -------------------------------------------------------------------------
          and          47.0          58.7         11.7                 1.902
    -------------------------------------------------------------------------
    NU005               1.5          26.0         24.5                 1.564
    -------------------------------------------------------------------------
         incl          10.0          23.0         13.0                 2.379
    -------------------------------------------------------------------------
    NU008               2.5           8.5          6.0                 3.494
    -------------------------------------------------------------------------
    NU012              19.5          25.0          5.5                 1.632
    -------------------------------------------------------------------------
         incl          23.5          25.0          1.5                 4.835
    -------------------------------------------------------------------------
          and          34.0          37.0          3.0                 3.442
    -------------------------------------------------------------------------
          and          57.5          61.4          3.9                 1.658
    -------------------------------------------------------------------------
          and          73.5          83.0          9.5                 3.076
    -------------------------------------------------------------------------
    NU017              33.0          47.5         14.5                 2.881
    -------------------------------------------------------------------------
          and          57.0          59.5          2.5                 1.423
    -------------------------------------------------------------------------
    NU019               1.7           3.0          1.4                 2.174
    -------------------------------------------------------------------------
          and          67.5          98.5         31.0                 6.927
    -------------------------------------------------------------------------
         incl          67.5          71.0          3.5                49.204
    -------------------------------------------------------------------------
    NU020              22.5          27.5          5.0                 1.733
    -------------------------------------------------------------------------
    NU022              44.0         153.0        109.0                 1.130
    -------------------------------------------------------------------------
         incl          62.5         104.0         41.5                 1.648
    -------------------------------------------------------------------------
         incl          86.6          93.0          6.4                 7.241
    -------------------------------------------------------------------------
    NU023              27.0          29.0          2.0                 2.129
    -------------------------------------------------------------------------
    NU024               8.0          35.4         27.4                 1.355
    -------------------------------------------------------------------------
    NU025              20.0          22.0          2.0                 2.345
    -------------------------------------------------------------------------
          and          31.5          33.0          1.5                 2.162
    -------------------------------------------------------------------------
    NU026              16.0          18.0          2.0                 1.394
    -------------------------------------------------------------------------
          and          36.0          40.0          4.0                 1.484
    -------------------------------------------------------------------------
    NU028              31.0          33.0          2.0                14.069
    -------------------------------------------------------------------------
          and          79.5         108.0         28.5                 3.235
    -------------------------------------------------------------------------
    NU035               5.5           7.0          1.5                15.452
    -------------------------------------------------------------------------
          and          96.0         102.0          6.0                 5.742
    -------------------------------------------------------------------------
          and         116.0         131.5         15.5                 3.936
    -------------------------------------------------------------------------
    NU007, NU010, NU030 and NU034, did not return any significant gold
    assays. All NUxxx series holes were drilled from underground.

    Significant tungsten values continue to be encountered proximal to the
gold mineralization.  These are shown in the table below.


    Table 2. Selected tungsten analyses (reported as WO(3)) from Nicholas
    Lake Main Zone.
    -------------------------------------------------------------------------
    Diamond           From           To         Width             Tungsten
    Drillhole       (metres)      (metres)     (metres)        Grade (WO(3)%)
    -------------------------------------------------------------------------
    N077               24.5            31          6.5                 0.041
    -------------------------------------------------------------------------
    N027                 18          32.5         14.5                 0.067
    -------------------------------------------------------------------------
    N094              169.5         191.5           22                 0.126
    -------------------------------------------------------------------------
          and         227.5         230.5            3                 0.466
    -------------------------------------------------------------------------
    NU001                28            34            6                 0.073
    -------------------------------------------------------------------------
          and          78.5            81          2.5                 0.330
    -------------------------------------------------------------------------
    NU002               9.5            11          1.5                 0.550
    -------------------------------------------------------------------------
          and          48.5          58.7         10.2                 0.041
    -------------------------------------------------------------------------
    NU022              91.5            93          1.5                 0.776
    -------------------------------------------------------------------------
    NU023                 3          22.5         19.5                 0.059
    -------------------------------------------------------------------------
    NU024               0.2             4          3.8                 0.173
    -------------------------------------------------------------------------
          and          15.5            23          7.5                 0.142
    -------------------------------------------------------------------------
    NU025                 2             6            4                 0.323
    -------------------------------------------------------------------------
    NU026                 4            10            6                 0.047
    -------------------------------------------------------------------------
          and          14.5            21          6.5                 0.067
    -------------------------------------------------------------------------
    NU028                58          59.5          1.5                 0.339
    -------------------------------------------------------------------------
          and            97           105            8                 0.327
    -------------------------------------------------------------------------
    NU030               0.2             9          8.8                 0.551
    -------------------------------------------------------------------------
    NU035             106.5           108          1.5                 0.117
    -------------------------------------------------------------------------
          and           116           122            6                 0.516
    -------------------------------------------------------------------------
    NU012               7.5             9          1.5                 0.131
    -------------------------------------------------------------------------
    N093                 53          60.5          7.5                 0.066
    -------------------------------------------------------------------------
          and          84.5            89          4.5                 0.045
    -------------------------------------------------------------------------
          and          98.5           135         36.5                 0.065
    -------------------------------------------------------------------------
          and           212         219.5          7.5                 0.133
    -------------------------------------------------------------------------
    

    Dave Webb, Tyhee's president and CEO said "The gold values continue to be
in line with expectations. The tungsten values are interesting but need to be
evaluated in three dimensions to determine if they will contribute
significantly to the overall economics of the project. Results from less than
a dozen drillholes remain to be received before we will be ready to commence a
resource estimate using the new data."
    The diamond drills are being shutdown for the holiday season and are to
be restarted on January 4th, 2008. The diamond drill on the BigSky Property
completed an additional two drillholes prior to being moved to its next
set-up. Partial assay results from the first two drillholes have been received
and the core from drillholes 3 and 4 is being processed in camp. A second
drill has been set-up on the BigSky Property and will be ready to start in the
New Year. A third diamond drill is in Yellowknife and will be mobilized to the
BigSky property in January.
    The Company's principal focus is the development of its Yellowknife Gold
Project. The Yellowknife Gold Project consists of 6,625 hectares (15,481
acres) of mining leases located 90 km (56 miles) north of Yellowknife. The
property hosts several areas of gold mineralization, including the partially
developed Nicholas Lake Gold Zone, the Ormsby Zone and the Bruce Lake Zone. A
1.2 million ounce measured and indicated gold resource plus a 353,000 ounces
inferred gold resource has been identified on the property as reported June
20, 2007 (News Release S.8 R.11). Additional exploration properties within the
Yellowknife Gold Belt, including the Goodwin Lake, Clan Lake, and BigSky
Properties have been acquired. Preliminary exploration has confirmed
potentially economic gold mineralization on these exploration properties, and
initial diamond drilling has commenced or is planned on these properties.

    Sample Analysis and QA/QC Program

    Tyhee completed fire assays on drill core samples using 30 gram aliquots
with ICP-ES finish for gold analyses, prepared at Acme Analytical Laboratories
Ltd. in Yellowknife, and finished at Acme Analytical Laboratories Ltd in
Vancouver. A semi-quantitative multi-element analysis is run on 0.5 gm aliquot
samples leached in a hot aqua regia solution and measured using ICPES
techniques. All elevated tungsten values are then reanalysed on 0.5 gm
aliquots digested using phosphoric acid and measured using ICP ES techniques.
Tyhee conducts a rigorous QA/QC program of inserting blanks and duplicates in
the field and standards in the laboratory. The laboratory also conducted their
own independent QA/QC program including inserting their own standards and
rerunning samples from pulped material and reject material. These results were
provided to Tyhee. All standards, duplicates, blanks and check assays returned
acceptable results. Dr. D.R. Webb, PhD, P.Geol., the designated QP within the
meaning of NI 43-101, has reviewed this release and approves of its content.

    To view a map please visit:
    http://files.newswire.ca/476/1712Nicholas.pdf

    NO REGULATORY AUTHORITY HAS APPROVED OR DISAPPROVED THE CONTENT OF THIS
    RELEASE. THE TSX VENTURE EXCHANGE DOES NOT ACCEPT RESPONSIBILITY FOR THE
    ADEQUACY OR ACCURACY OF THIS RELEASE.

    Tyhee's shares trade on the TSX Venture Exchange under the symbol "TDC".
For additional information, please visit the Company's website, www.tyhee.com.





For further information:

For further information: Tyhee Development Corp.: David Webb, President
and CEO, Tel: (604) 681-2877 (toll free 1-866-681-2877), info@tyhee.com; The
Equicom Group Inc.: Michael Joyner, Tel: (416) 815-0700 ext 275,
mjoyner@equicomgroup.com

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