IM 2016 September 2016 | Page 21
OPERATION FOCUS- CASCAVEL_proof 23/08/2016 09:31 Page 3
OPERATION FOCUS
Mustang loads into the skip
Parallel lodes very common – the
more you mine, the more you find
Managing Director Mark Papendieck
a Case mini excavator underground. Drilling is by
Tornibras jackleg pneumatic drills, made in
Brazil.
The mining method is tailored to structurally
controlled, bonanza-grade gold rich shoots. The
average planned height of the stopes is around
1.3-1.4 m and the average thickness of the
mineralisation up to about 1 m. Craighead and
Gordon report development is largely completed
on Levels 0 and 1 where initial ‘T bone’ mining is
planned, extracting 90% of the mineralisation. ‘Tboning’ includes developing 3 m wide x 1.6 m
high slot raises at 9 m centres (6 m clear
between sides), and extracting the in tervening 6
m wide areas at a height of ~1.2 m (or more if
the mineralisation is thicker than 1.2m).
“Activities are now moving to Level 2, where it
is planned to commence the use of long-hole
open stoping as the main mining method.
Development has also included the addition of
an internal decline, which will expedite delivery
of ore from the stoping areas to the main incline
shaft.”
They report impressive
grades returned from panel
sampling, including:
I 14.78 m @ 75.36 g/t Au in
Level 1 South
development
I 10.3 m @ 100 g/t Au and
11.6 m @ 50.3 g/t Au on
opposite walls of the
Level 0 Central Level drive
I 3.66 m @ 142.6 g/t Au in
Level 1 central.
Orinoco Gold notes that
gold has been panned from
most advance faces. The
work has also resulted in the
addition of the Northern
Zone to the mining inventory,
with the initial level drive
intersecting high grade
mineralisation. This area was
previously not accessible,
however drilling had
intersected the mineralised
structure with the recent
work confirming the
mineralisation.
The company has stated
that development has
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