TYLER RESOURCES INC.
TSX VENTURE : TYS

TYLER RESOURCES INC.

August 23, 2005 09:00 ET

Tyler Resources Announces Drilling Success in Large Stepout at Main Zone, Including 36.1 Meters Grading 0.45% Copper and 0.016 Molybdenum in DDH #38. Second Drill Rig Being Mobilized

CALGARY, ALBERTA--(CCNMatthews - Aug. 23, 2005) - Tyler Resources Inc. (TSX VENTURE:TYS) is pleased to announce assay results for drill holes #38 and 39 from a significant stepout north of the Main Zone at the Bahuerachi project, Mexico.

Results from step-out holes located 500 to 600 meters north of section 2NE have confirmed that the main mineralized domains continue to the north including a copper oxide enriched blanket, skarn development, quartz stockworking and mineralized porphyry. The Main Zone mineralized trend has been expanded to over 1,500 meters of strike length and is still open to the north and south, at depth as well as locally laterally.



Significant intervals for drill holes DDH-BAH #38 and 39.

------------------------------------------------------------------------
From To Interval Copper Gold Silver Zinc Mo
Hole # (m) (m) (m) (%) (g/t) (g/t) (%) (%) Rock Type
------------------------------------------------------------------------
BAH-38 30 66.1 36.1(x) 0.45 0.03 3.4 0.016 Sediments/
Skarn/
QFP Dyke
------------------------------------------------------------------------
Within 30 120.8 90.8(xx) 0.25 0.02 2.1 0.015 Sediments/
(EOH) Skarn/QFP
------------------------------------------------------------------------
BAH-39 34 66.5 32.5 0.34 0.02 2.1 0.012 Sediments/
Skarn/
Minor QFP
------------------------------------------------------------------------
and 83.72 88.35 4.63 0.63 0.07 3.9 0.008 Mineralized
shear zone
------------------------------------------------------------------------
(x) Grade for the interval based on 32.45 meters of core recovered.
(xx) Grade for the interval based on 86.35 meters of core recovered.
All intervals are interpreted true widths.


Tyler is pleased to have successfully accomplished the objective of the large step out, which was to accelerate the confirmation of extensions of the various mineralized domains to the north. Further surface work has also exposed areas of strongly stockworked porphyry with abundant fracturing, veining and copper oxide mineralization south and east of drill hole #38. Ongoing drilling will test these areas at depth as well as focus on discovering areas of thicker copper oxide enriched blanket and zones of skarn mineralization. Drill hole #40 has now been completed with samples having been shipped to the lab and drill hole #41 is currently ongoing.

Mobilization of the new drill rig has begun. Barring unforeseen difficulties, drilling with the second rig should commence within approximately 10 days.

Please refer to the drill hole location plan map attached on http://www2.ccnmatthews.com/database/fax/2000/tys822.pdf for the general location of all drill holes and sections.

All assay work was performed by ICP at ALS-Chemex labs of Vancouver, with gold done using standard fire assay methods. All samples sent to the lab are sealed with security tags for delivery to ALS-Chemex. Duplicate samples as well as standards and blanks are inserted in each batch of samples delivered to the laboratory and then checked to ensure proper quality assurance and quality control (QA/QC).

The Qualified Person responsible for the design and implementation of the Field Program as well as the preparation of this news release was J. P. Jutras, P.Geol., and President of the Company. The work program was carried out with the participation of Dr. Shane William Ebert, Ph.D, P.Geo and Director, Mr. Brent Gonek, B.Sc, Geology, G.I.T., and Mr. Paul Turnbull, P.Geol, consultants to the Company.



"Jean Pierre Jutras"

Jean Pierre Jutras
President/COO


All statements, other than statements of historical fact, in this news release are forward-looking statements that involve various risks and uncertainties, including, without limitation, statements regarding the potential extent of mineralization and reserves, exploration results and future plans and objectives of Tyler Resources Inc. These risks and uncertainties include, but are not restricted to, the amount of geological data available, the uncertain reliability of drilling results and geophysical and geological data and the interpretation thereof and the need for adequate financing for future exploration and development efforts. There can be no assurance that such statements will prove to be accurate. Actual results and future events could differ materially from those anticipated in such statements. These and all subsequent written and oral forward-looking statements are based on the estimates and opinions of management on the dates they are made and are expressly qualified in their entirety by this notice. The Company assumes no obligation to update forward-looking statements should circumstances or management's estimates or opinions change.

The TSX Venture Exchange has neither approved nor disapproved of the contents of this press release.

Contact Information

  • Tyler Resources Inc.
    Jean Pierre Jutras
    (403) 269-6753
    or
    Tyler Resources Inc.
    James Devonshire
    (403) 269-6753
    (403) 266-2606 (FAX)
    Website: www.tylerresources.com