after trade announcement, page-31

2002-01-24 ASX-SIGNAL-G
As well as this. These are the only 2 that i can find....



HOMEX - Perth

+++++++++++++++++++++++++
Rio Tinto has reported a revised Inferred Resource estimate of 72 Mt
@ 23% P2O5 for the Wonarah phosphate deposit in the Northern
Territory.

This revised resource estimate is based on a review of the drilling
data which focused on geological/grade continuity and revealed an
increase in grade but a decrease in tonnage from that previously
reported. However, additional mineralisation, intersected outside the
resource area has not been included in the resource estimate.

The revised resource estimate (using a 15% P2O5 cut-off grade) is
based upon data from the 2000 drilling programme plus an additional
37 holes drilled within the area of the block model as part of a 71
hole programme undertaken in May and June 2001.

All drilling data used in the initial resource estimate (115 Mt @
22% P2O5) was used in the update. As in the initial estimate the
resource has been calculated for the mudstone phosphorite unit only
and the underlying, lower-grade, chert-phosphorite unit was again
excluded from the resource as it is a transitional unit of limited
extent. Geological unit and block model parameters used were the same
as for the initial estimate. The drilling, along with a more rigorous
definition of the geological units in the existing holes has modified
the geological model with a reduced continuity, leaving gaps in what
was previously considered continuous Mudstone Phosphorite. This has
resulted in a decrease in the tonnage that was previously reported.

Potential remains for additional high-grade ore at Wonarah. As
reported previously, drilling in the southwest has identified a new
zone of moderate to high-grade phosphorite mineralisation 15km from
the current resource at relatively shallow depths. Furthermore, at
Arruwurra, 25km to the southwest, rock chip samples of mudstone
phosphorite returned a maximum assay of 35.5% P2O5 with low
corresponding alumina and iron.

Meanwhile world di-ammonium phosphate ("DAP") fertiliser prices
continue to recover and sale prices of US$154/tonne have been
recorded in January 2002.

Rio Tinto has an 80% interest in the project having spent a total of
$2.4 million in exploration and will free carry AKD's 20% interest in
the project through to a decision to mine or by spending $10 million
in expenditure, whichever comes earlier.

Z A Sas
MANAGING DIRECTOR