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EXPLORATION RESULTS GENERATE NEW EXPLORATION TARGETS
AT YANDEYARRA JOINT VENTURE PROJECT

De Grey Mining Limited (ASX code: DEG) is pleased to advise that first assays have
been received from rock samples collected during recent geological reconnaissance
of known gold and base metal occurrences at the Yandeyarra Joint Venture and
Friendly Creek Option projects, 100km south of Port Hedland in the Pilbara. The
reconnaissance reviewed known mineral occurrences and their geological settings in
order to prioritise gold and base metal exploration targets at Yandeyarra.
The results to hand are from the southwestern part of the Yandeyarra project where
little exploration has been carried out since the area was explored for nickel in the
1970’s.
Samples collected from sulphide rich quartz-carbonate veins exposed in shallow
historic prospecting pits over an 80m strike length returned assays up to 108g/t
gold, 1.26% copper and 9g/t silver. The area is surrounded by alluvial cover. A
single sample of a previously unrecorded gossanous quartz-carbonate vein subcropping
through the transported cover 100m to the north of the pits assayed 15.0g/t
gold with anomalous copper and silver. The area has never been soil sampled for
gold and the area of historic pits has never been drilled.
Also, geological reconnaissance of the area immediately north of the copper-gold
occurrences has identified a sequence of bimodal volcanic rocks, not recorded on
GSWA maps, that possibly extends over 7km of strike. Such sequences are
prospective for VMS-style base metals mineralisation. Less than half of this strike
was soil sampled for base metals in the 1970’s and that work located a copper-in-soil
anomaly of up to 825ppm copper over a 700m strike length of altered felsic
volcaniclastic rocks.
Managing Director Gary Brabham said “This is early work but these results point
toward early definition of drill targets for both gold and base metals at Yandeyarra.