September 11, 2007
FOR IMMEDIATE RELEASE
Tri Origin Exploration
Ltd. (TOE:TSX-V) is pleased to report that
significant progress is being made at the Woodlawn Zinc-Copper Projects in NSW,
Australia held by the Company’s 51%-owned Australian subsidiary Tri
Origin Minerals Ltd. (TRO:ASX). TRO has announced that a diamond drilling
program has commenced to determine geotechnical and metallurgical parameters
for the bankable feasibility study now in progress. Diamond drill holes
targeting the A, B1 and C massive sulphide lenses will provide the data required
to meet independent geotechnical and metallurgical consultant’s
requirements for the study. Drilling will also be undertaken for geotechnical
investigations at the proposed new surface portal and decline sites.
In addition to underground ore lens geotechnical
studies, metallurgical work for both underground and tailings retreatment
programs is well underway and process design studies are progressing well.
Metallurgical work is focussed on further grind optimization studies and
fine-tuning the talc pre-float reagent requirements. Drill core from the
current programme will also be used for further confirmatory metallurgical test
work.
Woodlawn is located 200 kilometres
southwest of Sydney
in the metal-rich Lachlan Fold Belt of New South Wales. The past producing
Woodlawn underground and open pit mine operated from 1978 to 1998 and produced
approximately 13 million tonnes of zinc/copper/lead/silver ore. TRO has
calculated an underground Measured and Indicated Resource of 8.58 million
tonnes grading 10.3% zinc, 1.8% copper, 4.0% lead, 84 grams per tonne of silver
and 0.54 grams per tonne of gold at a 7.0% lower zinc equivalent cut-off grade
and an additional Measured and Indicated Resource for tailings of 6.98 million
tonnes grading 2.26% zinc, 0.55% copper, 1.34% lead, 30 grams per tonne of
silver and 0.31 grams per tonne of gold at no lower cut-off grade. As part of
TRO’s bankable feasibility study for the combined Woodlawn underground
and tailings retreatment programs, resource reports have been released by TRO
and filed by TOE on SEDAR.
The Woodlawn Zinc-Copper Projects bankable
feasibility study remains on track for completion during the first quarter of
2008.
TRO has also announced that an exploration
drilling program has commenced at the Cullarin Project Joint Venture area
located 30 kilometres north of the Woodlawn Zinc-Copper Projects site. The
current program of approximately 1000 metres of reverse circulation drilling is
to conduct initial evaluation of the Cullarin Valley Prospect, one of a number
of known gold/silver/copper/lead/zinc occurrences on the property.
The technical reports referred to in this
release dated September 6th, 2007 are entitled
- Woodlawn
Underground Project – Technical Report (NI 43-101), dated 14th
August, 2007 and
- Woodlawn
Re-treatment Project – Technical Report (NI 43-101), dated 30th
August, 2007 (the “Technical Reports”).
The
reports were authored by Robin Rankin, a Member of the AusIMM, and registered
as a Chartered Professional Geologist (CPGeo). Robin Rankin is Principal
Geologist and operator of GeoRes. He has sufficient experience relevant
to the style of mineralization and type of deposit under consideration, and to
the activity which he is undertaking, to qualify as a Competent Person as
defined by National Instrument 43-101. He consents to the inclusion in
this release of the matters based on his information in the form and context in
which it appears.
This release was prepared by Tri Origin
Exploration Ltd. from information supplied by its subsidiary Tri Origin
Minerals Ltd (TRO). TRO’s news release can be publicly accessed at www.asx.com.au under Listed Company Documents
filed by TRO. TRO’s reporting of mineral resources, exploration results
and qualifications of competent persons are in accordance with the 2004 Edition
of the Australasian Code for Reporting of Exploration Results and the JORC Code
of December 17, 2004. Although these codes may differ in some regards to
Canadian Standards including NI 43-101, it is the opinion of TOE management
that statements made in the TRO report are, in all material regards, compliant
with NI 43-101standards.
For further information
please contact:
Tri Origin Exploration
Ltd.
Dr.
Robert Valliant, President
Tel: (905)
294-9942.
Web page:
www.triorigin.com
E-mail:
invest@triorigin.com
Tri Origin Exploration Ltd. is
publicly listed on the TSX Venture Exchange under the trading symbol TOE. Tri
Origin has leveraged exposure to mineral discoveries in Australia
through its 51% equity interest in its subsidiary, Tri Origin Minerals Ltd.; a
publicly traded company listed on the Australian Stock Exchange under the
symbol TRO.