13 September 2006 Australian Stock Exchange DIAMOND DRILLING...

13 September 2006

Australian Stock Exchange

DIAMOND DRILLING UNCOVERS NEW MINERALISATION ZONE
AT FROG’S LEGS GOLD PROJECT

HIGHLIGHTS:

o Discovery Hole MERC626D returned 11m @ 5.61g/t (including 4m @ 10.39g/t)
o Mist lode extended 120m north of current envelope
o Other significant new strike extensional diamond results include:
- 8m @ 7.99g/t Au from 371m and 4m @ 15.39g/t from 493m
- 5m @ 5.76g/t Au from 332m (including 1m@ 10.69g/t)
o Drilling campaign is set to continue at project

Gold producer Dioro Exploration NL (ASX: DIO) has uncovered potential for a new mineralisation
zone within the Frog’s Legs deposit in the Eastern Goldfields Region of Western Australia,
following further assay results from the diamond core-drilling program currently underway at the
project (Refer Fig 1).


The current resource at the project is also set to grow with the addition of the wide high-grade
zones intersected both at depth and along strike to the north.

The diamond drilling program was designed to test the strike and depth potential of the Mist and
Rocket Lodes outside the existing resource envelope. Currently the Mist/Fog resource of 652,000
ounces makes up 75% of the total underground resource.

Dioro hold 49 per cent of the Mungari East joint venture ground, which contains the Frog’s Leg
deposit with the remaining 51% held by project operator Mines and Resources Australia Pty Ltd
(MRA”) (a subsidiary of the French group Areva). Areva is currently divesting its interest to La
Mancha Resources Inc, a Toronto listed company.

The Mungari East joint venture recently commenced a $2.5 million six month drilling program to
test the resource potential outside the current resource envelope. A number of holes are targeted
at depth within the Inferred Resource envelope and the results will be made available throughout
the six-month program.

The diamond drill program commenced in late May with two drilling rigs – one drilling the northern
extent of Mist/Fog lodes – and the other drilling at depth. Both rigs are still on site and a third rig
is currently being sourced. All the planned 3443 metres of reverse circulation drilling has been
completed including all diamond precollars and 60% of the diamond coring is complete.

The current drilling program will continue into October.