TORONTO, June 26, 2013 /CNW/ - Atlanta Gold Inc. (TSXV: ATG; OTCQX: ATLDF) today announced positive metallurgical test results from 11 tons of
bulk stock material previously washed by a sluice/jig plant located at
the Knife River Corporation's facility in Boise, Idaho (see news
release dated September 26, 2012) with the objective of obtaining 25
lbs of concentrate for refining evaluations and estimating costs.
The initial bulk sample of 107 tons processed by Knife River in August
2012 recovered 20% of the gold values from an average feed of 0.051
ounces per ton (opt) Au. Reprocessing in June 2013 of 11 tons of the
materials remaining from the initial bulk sample and grinding to -20
mesh liberated additional gold and heavy metals produced a concentrate
of 18.896 opt Au which was verified by an independent mine laboratory.
Of the total gold, 66.6% was recovered from standard cyanidation. Using
grind, roast and cyanidation, overall recovery rates increased to
Wm. Ernest Simmons, President & CEO commented: "Additional lab work will
be needed to optimize grinding, roasting and cyanidation at a selected
toll recovery facility located out of state. We are very pleased with
this initial result which demonstrates that with some fine tuning on
the gravity test we will be able to maximize the recovery of the metals
from onsite concentrates that are of a quality that justify toll
processing and refining costs."
Grind, roast and cyanidation
The objective for Final Recovery testing is to determine if the onsite
gravity recovery system would produce a concentrate using only water as
a medium. This testing supports the hypothesis that gravity separation
is a viable option.
Bulk stock material was fed by hopper conveyor feeder to a ball mill and
the outflow slurry delivered to a custom sluicing system with an 8 foot
long spreading flume and into a 30 inch wide by 4 foot long sluice box
containing low profile riffles.
The sluice concentrates were collected after each 2,000 lb run. The
concentrates were taken back to the shop, screened through a 20-mesh
screen and the -20 mesh was upgraded/cleaned on a 4x8 shaker table,
producing 25 lbs of heavy concentrate obtained from processing 11 tons
of the feed material.
The +20 mesh, shaker table tails, -20 mesh sluice concentrate, head feed
samples, sluice tailings and overflow slimes were saved, dried, sealed
and sent for assay.
Notable amounts of fine, free gold was visible in the concentrate from
approximately to -20 mesh down to the finest gold the human eye can
Eric Berentsen, a director of Atlanta Gold Inc. and a qualified person
as defined by NI 43-101, has reviewed and verified the technical
information contained in this news release. Mr. Berentsen is a
Registered Member of The Society for Mining, Metallurgy and
Exploration, Inc. (SME).
About the Company
Atlanta Gold Inc. holds through its 100% owned subsidiary, Atlanta Gold Corporation,
leases, options or ownership interests in its Atlanta properties which
comprise approximately 2,159 acres (8.74 square kilometres) located 90
air kilometers east of Boise, in Elmore County, Idaho. A long history
of mining makes Atlanta very suitable for development of new mining
projects. The Company is focused on advancing its core asset, Atlanta,
towards mine development and production.
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SOURCE: Atlanta Gold Inc.
For further information:
Atlanta Gold Inc.:
Wm. Ernest Simmons
President and CEO
Atlanta Gold Inc.
Vice President and CFO
Telephone: (416) 777-0013
CHF Investor Relations
Director of Operations
Telephone: (416) 868-1079 ext 225