Investor Presentaiton
ZACATECAS, MEXICO
LA COLORADA SKARN PROJECT
// Mineral Resource Estimate at Different Cut-off Values and Mining Methods
Mining
Method
Cut-off
Value
(US$/tonne)
Classification
1.
Tonnes
Zn
Pb
Ag
Zn
Pb
(millions)
(%)
(%)
(g/t)
(Mt)
(Mt)
음골
Ag
(Moz)
2.
Sub-level Caving
(SLC)
Indicated
95.9
2.77
1.28
31
2.66
1.23
94.4
45
Inferred
147.8
2.29
1.04
28
3.39
1.54
132.9
Indicated
101.5
2.66
1.22
30
2.70
1.24
96.3
45
3.
Sub-level
Inferred
153.2
2.03
0.88
25
3.12
1.34
125.1
Shrinkage
(SLS)
Indicated
67.3
3.08
1.46
33
2.07
0.98
72.1
65
4.
Inferred
60.8
2.59
1.13
30
1.60
0.68
59.8
Indicated
65.4
3.39
1.62
36
2.22
1.06
75.6
Long-hole Open
60
60
56
5.
6.
Inferred
113.8
2.91
1.32
34
3.31
1.50
124.6
Stoping
(LHOS)
Indicated
56.3
3.62
1.76
38
2.03
0.99
68.0
70
70
Inferred
88.5
3.17
1.46
37
2.80
1.29
104.5
Prices used to report mineral resources were: US$22
per ounce of silver, US$2,800 per tonne of zinc and
US$2,200 per tonne of lead.
An estimate of mineral value per tonne was calculated
using metallurgical recoveries of 87.4% Ag, 88% Pb and
93% Zn with mineral concentrate qualities of 67% Pb in
lead concentrate and 60% Zn in zinc concentrate,
obtained from metallurgical testing. Estimates for
transport, payability and refining/selling costs, based
on experience and long-term views of the marketing,
treating and refining of these types of mineral
concentrates, were included.
This table has been included to reflect the sensitivity of
the mineral resource to mining method, potential
mineable shapes and costs rather than applying
variable cut-off values within a non-selective mining
shape.
The inventories in the table are for sensitivity
comparisons to the SLC mineral resource estimate
stated above; they do not represent mineral resource
estimates in themselves.
All inventories are in-situ tonnes and metal contents.
The effective date of the mineral resources estimate is
Sept. 13, 2022. See our news release dated Sept. 14,
2022 for further information.
PAN AMERICAN
SILVER
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