June 13, 2007 12:19 ET

Tyler Reports Continuing Bahuerachi Drill Results Including 14.1 Meters Grading 3.02% Copper, 10.37 G/T Silver, and 125.70 Meters Grading 0.52% Copper and 0.006% Molybdenum

CALGARY, ALBERTA--(Marketwire - June 13, 2007) - Tyler Resources Inc. (TSX VENTURE:TYS) is very pleased to announce further drill results from its ongoing drill program at the Bahuerachi project, Mexico.

Assay data from 5 outstanding drill holes has been received. All drill holes intersected their targets and will both assist in further upgrading resource categories within the main Bahuerachi Deposit area, and expand higher grade areas in further modeling (RC 81, 82, 83).

Significant results for these drill holes are presented in the following table and discussed below. Drill hole collar locations are shown on the attached drill plan map (please see link at: http://www.ccnmatthews.com/docs/tys613_map.pdf), and updated drill sections 2.5 NE and 5 NE will be available with this news release on our website at tylerresources.com.

Significant Intervals, Main Zone

Hole # From To Interval Copper Gold Silver Zinc Mo Rock Type
(m) (m) (m) (%)(g/t) (g/t) (%) (%)
DDH 118 68 440.4 291.52(1) 0.37 0.03 3.0 trace 0.006 sediments
including 150 278 125.70(2) 0.52 0.05 3.85 trace 0.006 Porphyry
DDH 119 3 17.1 14.1 3.02 0.06 10.37 0.29 0.005 marble
and 32 104.5 72.5 0.54 0.04 7.70 0.31 0.004 Marble/skarn
including 70.5 104.5 34.0 1.03 0.09 15.35 0.56 trace Skarn/Marble
RC-81 0 145.92 112.48(3) 0.43 0.06 3.46 trace trace Porphyry
including 19.76 47.12 27.36 0.69 0.08 2.91 trace trace Porphyry
and 153.52 176.32 22.80 0.27 0.06 1.53 trace trace Porphyry
RC-82 18.24 183.92 114(4) 0.40 0.06 3.3 trace trace Porphyry
RC-83 50.2 212.8 145.6(5) 0.42 0.04 3.14 trace trace Porphyry
including 74.5 129.2 54.7 0.54 0.05 4.74 trace trace Porphyry
(1) Excluding 80.88 meters of unmineralized dykes.
(2) Excluding 2.30 meters of unmineralized dykes.
(3) Excluding 33.44 meters of unmineralized dykes.
(4) Excluding 51.68 meters of unmineralized dykes.
(5) Excluding 17 meters of unmineralized dykes.
All intercepts are interpreted to represent true widths of mineralization.
Unmineralized dykes are oblique to the drilling direction and their
thickness may be overrepresented by 20 to 40%.

Drill Hole Results Discussion

All drill holes intersected their targets and will serve to improve mineral resource classifications in further modeling. DDH-119 was drilled within 5 meters of previous reverse circulation drill hole RC-77, confirming the distribution and overall grades of mineralization, as well as returning slightly higher grades near surface in a zone of previous poor to moderate recovery in RC drilling.

More importantly, RC drill holes 81, 82 and 83 were drilled in an area currently defined as inferred resources in porphyry and sediments. The holes, expected to collar into porphyry and end in sediments, have ended in mineralized porphyry. This will generate a significant widening of the near surface higher grade porphyry as modeled during the last resource estimate by 50 meters to in excess of 100 meters locally on sections 5 NE and 6 NE. The eastern boundary of the porphyry on these sections has now been extended to the east, with the location of the final sediment contact remaining to be defined by further drilling.

Lastly, two recent drill holes on the western edge of the porphyry complex on sections 5 and 6 NE (DDH-120 and 122) have intersected both marble and skarn units at fairly shallow depth (+/-100 meters), and well within anticipated pit development parameters. Neither the typically higher grade skarn nor marble units had been modeled on the west side of the porphyry on these sections in the last resource estimate update due to lack of drilling coverage at that depth. These new intersects now outline the potential to target higher grade skarn on the western edge of the porphyry complex between sections 4 NE to 7 NE, for a potential strike length of 500 meters in addition to the high grade skarn body defined in the southern area of the current resource model.

Field Update

Drilling is ongoing with three rigs operating in the Main Zone, aiming to upgrade certain areas within the porphyry complex in terms of resource classification from the inferred to indicated category (DDH-BAH-123, 124) and identifying higher grade material within the current model space. All core is also presently sampled for geotechnical work as well which will be used in the pre-feasibility study scheduled to commence once scoping is finalized.

The reverse circulation drill rig continues to be used both for infill drilling and for condemnation drilling of areas that may be suitable for infrastructure development.

Results currently outstanding include core holes BAH-120, 121 and 122 as well as RC-84, 85, 86, 87 and 88 (see attached location map).

Independent Resource Estimate Report Update

Preparation of the supporting 43-101 Independent Report is currently ongoing for filing within the 45 days from the release of the latest resource estimate numbers, as required by National Instrument 43-101. The Company has been advised by Associated Geosciences Limited ("AGL"), the independent authors of the resource estimate that a minor error has been found in the formula used to calculate copper equivalent grades. This has been corrected and there will be minor grade variations between the final report and the resource estimate numbers previously delivered to the Company and published on May 23, 2007.

The Company has reviewed and updated its corporate presentation and tables to reflect the final numbers as they will published in the coming Independent Report and notes that the variation in the CuEq grades (typically in the order of 0.01 to 0.02%) has no impact on the individual underlying metal grades (copper, gold, silver, zinc and molybdenum) as disclosed on May 23, 2007. Only the underlying average metal grades have been and continue to be used for the ongoing Scoping Study as conducted by IMC (Independent Mining Consultants), and the minor changes noted by AGL do not affect the IMC engineering work going forward.

About Tyler

Tyler Resources is a well funded Canadian junior exploration company focused on base and precious metals exploration in Mexico. Tyler's primary project is the Bahuerachi property, which hosts Mexico's fourth largest mineralized porphyry system. The Company is now in the advanced stage of an increased 35,000 meter combined diamond and reverse circulation drilling program extended into 2007, making it one of the most active Canadian junior exploration companies operating in Mexico.

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 is being carried out with the participation of Dr. Shane William Ebert, Ph.D, P.Geo, Vice President and Director, Grant Couture, M.Sc Geology, Paul Turnbull, B.Sc, P.Geol, Cornell McDowell, B.Sc Geology and Charla Boyer, B.Sc geology, consultants to the Company.

Jean Pierre Jutras, President/CEO/Director

Cautionary language:

Except for the historical and present factual information contained herein, the matters set forth in this news release, including words such as "expects", "projects", "plans", "anticipates" and similar expressions, are forward-looking information that represents management of Tyler's internal projections, expectations or beliefs concerning, among other things, future operating results and various components thereof or the economic performance of Tyler. The projections, estimates and beliefs contained in such forward-looking statements necessarily involve known and unknown risks and uncertainties, which may cause Tyler's actual performance and financial results in future periods to differ materially from any projections of future performance or results expressed or implied by such forward-looking statements. These risks and uncertainties include, among other things, those described in Tyler's filings with the Canadian securities authorities. Accordingly, holders of Tyler shares and potential investors are cautioned that events or circumstances could cause results to differ materially from those predicted. Tyler disclaims any responsibility to update these forward-looking statements.

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
    (403) 266-2606 (FAX)
    Website: www.tylerresources.com