Atna Resources Ltd. (ATN.TO), which fell more than 3% Friday,
has eased a bit more Monday as it updated the status of development
at its underground Pinson Mine near Winnemucca, Nevada.
Significant progress was made during the third quarter of 2012,
The second access into the mine was completed in June, and the
spiral decline has been driven an additional 370 feet, providing
access to two ore mining areas. A total of 440 feet of ore stope
access has been completed.
Year to date ore production from development now totals
approximately 3,390 tons at an average grade of 0.41 oz/ton. Ground
conditions in the ore mining areas have been good.
Boart-Longyear started underground RC drilling for stope
delineation in early October and eighteen drillholes have been
completed for a total of 1,420 feet. Assay results on this drilling
A temporary Cemented Rock Fill (
) plant is being built for use in backfilling ore mining areas and
a permanent CRF plant has been designed. A mobile crushing plant is
being set up on site to crush CRF aggregate.
Power lines have been extended to provide power to additional
de-watering wells and the crusher location. A second dewatering
well was commissioned in September and quotes are being received to
add a third well.
An assay lab is under construction and is expected to be
completed in early December. Assay services are presently being
provided by a third party lab. Expansion of the lined ore stockpile
area is also underway to contain mined sulfide ore.
The Nevada Division of Environmental Protection, Application for
Major Modification to the Water Pollution Control Permit, has been
declared administratively complete and is currently under technical
review with approval expected by the end of the year.
In July, approximately 1,550 tons of oxide ore was shipped to
Newmont Twin Creeks oxide mill for processing. The ore contained
548 ounces of gold at and average grade of 0.353 oz/ton. Recovery
by the mill was 92.6% of contained gold. Atna received
approximately $600,000 for this ore sale which will be credited
against capital in the third quarter.
All department head positions at Pinson have been filled. Atna
now has 13 full-time employees on site. DMC Mining Services, the
contract mining company, has 32 full-time employees on site, and
they have mobilized the major equipment needed for underground
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