BacTech Releases Positive Flotation Results for Telamayu Tailings
TORONTO, CANADA--(Marketwired - Apr 28, 2014) - BacTech
Environmental Corporation ("BacTech") (CSE:BAC)(OTC:BCCEF) (WKN:
A1H4TY) announced today the initial flotation results for the
Telamayu tailings project located in Potosi state, Bolivia.
BacTech enlisted the
services of SGS Bolivia S.A. to oversee the sampling of some 2,000
bags of tailings assembled by COMIBOL, the Bolivian state mining
company. In essence material was bagged at 1 meter intervals by
COMIBOL from 8 test holes of roughly 10 meters in depth. A "pipe"
was used to extract a sample from every bag and a larger sample of
200 kg was created. This larger sample was bagged and secured at
site before making its way to Lima, Peru. From there, the samples
were shipped to Inspectorate Exploration and Mining Services Ltd.
in Vancouver, Canada. The Company has not investigated or verified
the sampling program conducted by COMIBOL.
Assay chart
Element |
Unit |
Telamayu Tailing Comp. |
Ag |
g/mt |
275.0 |
Au |
g/mt |
.24 |
As |
ppm |
3145 |
Sb |
ppm |
953.61 |
Cu |
ppm |
22417 |
Bi |
ppm |
557.97 |
Sn |
ppm |
1571.8 |
Flotation results
Element |
Max.metal recovered to concentrate |
|
Recovery |
|
Ag |
35 oz/t |
|
60-64 |
% |
*Cu |
4.2-4.4 |
% |
33-35 |
% |
As |
0.65 |
% |
n/a |
|
*Copper recovery is 33-35% of the
remaining unoxidized sulphides in the tailings.
It was noted that
roughly 50% of the sulphides in the sample had been oxidized. Two
rougher kinetic flotation tests were carried out on the sample at
different grinds to evaluate the tailings response to flotation.
Results from these preliminary tests showed that after four stages
of rougher flotation approximately 15% of the material was removed
to a bulk rougher concentrate assaying 31-35oz/t silver (60-64%
recovery), 4.2-4.4% (33-35% recovery) copper and 0.65% arsenic.
Additional tests will be undertaken to attempt to improve the
recoveries for the silver component.
In addition to
silver and copper the assays showed significant values reported for
tin, antimony and bismuth. Gravity work will also be undertaken to
compliment this preliminary flotation work. The objective will be
to evaluate possible benefits of applying both techniques for
upgrading metals of value into concentrates for further treatment.
For example the tin grade of the sample was assayed at 0.157%
equating to 3,900 tonnes of contained tin (current price
$23,500/t).
The copper recovery
into concentrate at first glance would appear to be disappointing
but upon further investigation it appears that approximately one
half of the copper was extracted before flotation into the
grind/wash water. If this is the case then recoveries of up to 80%
were achieved if the wash water is included in the calculation.
That is to say an operation may include a washing process from
which the soluble copper is recovered prior to flotation.
BacTech will
continue to investigate different approaches combining gravity for
free silver and tin with flotation for silver and copper.
About Telamayu
COMIBOL advised that
the tailings at Telamayu were generated by a centralized milling
operation that treated material from 2 local mines, namely Animas
and Seven Suyos. The site contains some infrastructure including an
operating rail line, a power substation, a reliable water source
and a plant housing that could possibly be used to house a
flotation circuit. COMIBOL has estimated that there are
approximately 2.3M tonnes of tailings attributable to the above
assay results, and across the river is an additional 3M tonnes of
tailings from the same source, but no work has been initiated there
at this time. In addition, there are 2 additional tailings sites
within 50 km that could be investigated in future.
The tonnages
provided by COMIBOL are of a historical nature and have not been
confirmed by the Company. BacTech is not treating the historical
estimate as current mineral resources or mineral reserves as they
are not NI 43-101 compliant. The Qualified Person ("QP") on the
press release is Gary Williams, P.Geo.
BacTech Profile
BacTech
Environmental Corporation holds the perpetual, exclusive,
royalty-free rights to use the patented BACOX bioleaching
technology for the reclamation of tailings and mining waste
materials. In November 2011, BacTech signed a contract with the
Mines Branch of the Manitoba Department of Innovation, Energy and
Mines, to remediate an arsenopyrite gold stockpile situated at the
Snow Lake Mine in Snow Lake, Manitoba. The Company continues to
field enquiries globally with respect to additional opportunities
for remediation.
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Special Note
Regarding Forward-Looking Statements
This news
release contains "forward-looking information", which may include,
but is not limited to, statements with respect to future tailings
sites, sampling or other investigations of tailing sites, the
Company's ability to make use of infrastructure around tailings
sites or operating performance of the Company and its projects.
Often, but not always, forward-looking statements can be identified
by the use of words such as "plans", "expects", "is expected",
"budget", "scheduled", "estimates", "forecasts", "intends",
"anticipates", or believes" or variations (including negative
variations) of such words and phrases, or state that certain
actions, events or results "may", "could", "would", "might" or
"will" be taken, occur or be achieved. Forward-looking statements
involve known and unknown risks, uncertainties and other factors
which may cause the actual results, performance or achievements of
the Company to be materially different from any future results,
performance or achievements expressed or implied by the
forward-looking statements. Forward-looking statements contained
herein are made as of the date of this news release and the Company
disclaims, other than as required by law, any obligation to update
any forward-looking statements whether as a result of new
information, results, future events, circumstances, or if
management's estimates or opinions should change, or otherwise.
There can be no assurance that forward-looking statements will
prove to be accurate, as actual results and future events could
differ materially from those anticipated in such statements.
Accordingly, the reader is cautioned not to place undue reliance on
forward-looking statements.
Shares outstanding
48,755,027
The Canadian
National Stock Exchange (CNSX) has not reviewed and does not accept
responsibility for the adequacy or the accuracy of the contents of
this release.
Ross Orr, President & CEOBacTech Environmental
Corporation416-813-0303 ext 222info@bactechgreen.comBill Mitoulas,
Investor RelationsBacTech Environmental
Corporation416-479-9547bmitoulas@bactechgreen.comwww.bactechgreen.com
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