Tyhee announces diamond drilling campaign underway at its Goodwin Lake Property

    TSX Venture: TDC

    VANCOUVER, Sept. 18 /CNW/ - Tyhee Development Corp. (TSX Venture, TDC)
(the "Company") today announced that diamond drilling has commenced on its
wholly-owned Goodwin Lake Property, 12 km south of its Yellowknife Gold
Project, NWT Canada. A diamond drill has been mobilized by helicopter and has
commenced drilling the first hole. This drill program is expected to be
completed in 14 days.
    Four diamond drill holes are planned to test a mafic igneous unit that is
exposed for 80 metres in width and up to 350 metres in strike length.
Additional holes may be added pending results. Recent mapping shows the mafic
unit to contain substantial silicification in the form of irregular and
discontinuous quartz veining. Tyhee has identified an 80 metre wide by 120
metre portion of this unit with anomalous gold values. This area is known as
the VAD Showing. Thirty four grab samples collected by Tyhee this summer
average over 5 gpt gold, strongly influenced by samples of narrow quartz veins
(less than 1 metre) in excess of 100 gpt (capped at 100 gpt) and 49 gpt gold.
This is consistent with results reported by previous operators.

    Fifteen channels were sawn from the outcrop using diamond-bladed saws,
nine of which yielded significant results as shown below:

    Channel   Width     Gold Grade
              (metres)  (grams per tonne)
    1            3.0         0.681
    3            2.0         1.188
    4            2.0         0.152
    5            4.0         0.243
    6            1.0         0.103
    8            1.0        28.633
    9            1.0         0.165
    12           4.0         2.626
    13           2.0         2.121

    The six other channels yielded insignificant results.

    Dave Webb, President and CEO reports "We are pleased to have confirmed
the grades of grab samples from this property, and to have improved the
definition of the VAD Showing with the channel samples. The current drill
program will test this zone in the third dimension and assess portions of the
zone that are not exposed on surface. It is the first drill program on the VAD

    Update on Exploration

    Tyhee has completed sampling of the Nicholas Lake drill core, and all
samples have been submitted for analyses. The final results are anticipated by
early October. Sampling of all other drill core was deferred in preference for
the Nicholas Lake samples and is now being processed.
    The initial mapping and sampling of the Clan Lake Property has been
completed, and we are awaiting the final samples which will be incorporated in
an NI 43-101 report due before year end.
    Initial mapping and sampling of the BigSky Property has been completed
and the results will be reported upon receipt.

    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. 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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Tyhee Gold Corp.

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