Tyhee announces additional diamond drillhole results from Nicholas Lake Main Zone, up to 33.7 metres at 10.285 gpt gold

    TSX Venture: TDC

    VANCOUVER, Aug. 23 /CNW/ - Tyhee Development Corp. (TSX Venture, TDC)
today announced additional gold and tungsten (WO3) results from the Nicholas
Lake Main Zone, part of its wholly-owned Yellowknife Gold Project.
    All of the diamond drillholes previously completed on the Nicholas Lake
Main Zone have been resampled to assess the potential for a bulk-mineable
resource at this location. Previously, only portions of these holes had been
assayed. The final results from this program will be released upon receipt.
    Significant intersections including 8.1 metres of 7.801 grams per tonne
(gpt) gold and 33.7 metres of 10.285 gpt gold in N019 and 20.5 metres of 3.641
gpt gold in N043 have been obtained. Tungsten mineralization occurs proximal
to or within the gold-bearing zones, and significant intervals include 9.7
metres of 0.084 % tungsten (WO3) in N043 and 2.2 metres of 0.240 % WO3 in

    Table 1. Recent results from the resampling of Nicholas Lake Main Zone.

                    From           To        Width         Gold
    Hole         (metres)     (metres)     (metres)    Grade (gpt)
    N019            27.4         35.5          8.1         7.801
     and            83.2        116.9         33.7        10.285
     and           148.0        166.9         18.9         2.406
    N037            12.0         17.5          5.5         1.882
     and            48.0         69.0         21.0         3.964
    N043            58.0         72.0         14.0         2.889
     and           149.0        206.0         57.0         2.004
    incl           172.0        192.5         20.5         3.641
    N045            50.5         54.0          3.5        22.026
    N047           201.0        206.0          5.0         1.396
     and           233.0        236.5          3.5         2.122
     and           262.5        268.0          5.5         1.368
     and           306.0        310.3          4.3         3.389
    N049           223.5        235.0         11.5         2.323
     and           252.0        258.0          6.0         1.819
    N054           299.5        303.0          3.5         7.717
     and           332.5        342.0          9.5         0.882
     and           373.0        377.0          4.0         1.625
    N056           381.0        385.5          4.5         2.809
     and           437.5        445.5          8.0         4.896
    N101           236.5        253.0         16.5         1.847

    N041 and N052 did not intersect significant mineralization. N103 and N104
    were drilled east of the favourable granodiorite and did not intersect
    significant mineralization.

    Table 2. Selected tungsten analyses (reported as WO3) from Nicholas Lake
    Main Zone.

                    From          To         Width
    Hole         (metres)    (metres)      (metres)        %WO(3)
    N019(*)        106.6       107.7           1.1         0.134
    N041            43.5        48.0           4.5         0.081
    N043           188.5       198.2           9.7         0.084
    N047            86.5        91.0           4.5         0.113
     and           262.5       264.7           2.2         0.240
    N049            73.6        76.5           3.0         0.182
     and           254.0       258.0           4.0         0.105
    N052            91.5        93.0           1.5         0.148
    N054           337.5       338.5           1.0         0.321

    (*) True width is approximately 75 to 85% of the measured width for all
    holes except N019 which is drilled to the north. True width for N019 is
    approximately 50% of the measured width. These drillholes are shown on
    the attached figure.

    Dave Webb President and CEO reports "These results continue to be in line
with expectations, however ultimately the significance of the broader gold
intercepts and tungsten values cannot be properly assessed until all of the
data is received. Analytical results from Tyhee's four projects (Yellowknife
Gold Project, Goodwin Lake, Clan Lake, and BigSky) are pending, and will be
released as they are received and compiled."
    One diamond drill remains active on the Ormsby and Bruce Lake Zones with
a second diamond drill temporarily shutdown pending conversion to a lighter
helicopter-flyable configuration. Surface exploration crews are now focused on
mapping and sampling the BigSky Property where large mineralized shear zones
have been identified on strike and adjacent to the Giant Yellowknife Mine

    See attached map at: http://files.newswire.ca/550/TyheeMap.pdf

    About Tyhee Development Corp.
    Tyhee Development Corp. is a gold exploration and development company
currently focused on the historic Yellowknife Gold Camp, NWT, Canada. It is
the largest property holder in the historic camp, and has the largest
exploration and development program underway in the region. Its principal
asset is the advanced-stage Yellowknife Gold Project, which consists of 6,625
hectares (15,481 acres) of mining leases located 90 km (56 miles) north of
Yellowknife, NWT, Canada. Additional gold properties have been acquired within
the Yellowknife Gold Belt and exploration of these targets has commenced.
    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 ICP-ES
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.


    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,

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