Overview
Stage | Permitting |
Mine Type | Open Pit |
Commodities |
|
Mining Method |
|
Mine Life | 41 years (as of Jan 1, 2014) |
The Mt. Hope Project is one of the largest and highest grade primary molybdenum deposits in the world.
Project is fully permitted. Subject to satisfactory resolution of the appeal for the Record of Decision. Pre-construction work suspended.
Life of mine of Mount Hope project is 41 years. Active mining is about 34 years. Low-grade material is stockpiled for later post-mining processing. |
Source:
The project is owned and operated by Eureka Moly, LLC (EMLLC), of which New Moly has an 80% interest and POS-Minerals Corporation, a subsidiary of the South Korean steel company POSCO, has a 20% interest.
New Moly was created through a business combination between Avanti Kitsault Mines Ltd. and General Moly Inc. which owned the Kitsault and Mt. Hope assets.
Contractors
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Summary:
The Mount Hope Deposit is a classic molybdenum porphyry, typified by the deposit at Climax Colorado. This type of deposit has well zoned molybdenum (moly) mineralization where the grade zoning surrounds the central zone of the deposit and forms geometries that are circular in plan and arch shaped in section.
Mount Hope differs from Climax in that the multiple mineral centers are adjacent horizontally rather than juxtaposed over the same porphyry center. The centers of mineralization are referred to as the east and west mineral systems. The eastern and western mineral systems each contain mineral shells at least 3,300 ft in diameter, and the two systems are centered about 2,300 ft apart along a west-northwest axis. The mineral zones or “shells” consist of quartz stockwork veining that contains molybdenite that is hosted within both porphyry and sedimentary units.
MINERALIZATION
The main form of molybdenum mineralization is molybdenite (MoS2), developed within the porphyritic igneous rocks and in the Vinini hornfels adjacent to the southern margin of the igneous rocks. Much of the known molybdenite is distributed around two mineralized systems consisting of two dome shaped zones of mineralized stockworks. These zones are shaped like inverted bowls along an east-west trend. The two systems form east and west mineral systems that intersect each other.
Eastern and Western Minerals Systems
The western mineral system is characterized by a t ........

Summary:
The Mount Hope deposit will be mined utilizing conventional open pit methods. Low-grade material between the mill cut-off and a breakeven cut-off is stockpiled for later processing primarily in years 35 through 41, with some low-grades ores supplementing the mill throughout the mine life.
A conventional hard rock open pit mine plan was developed for the Mount Hope deposit based on the block model of the mineralization. The mining process will use standard open pit mining techniques of drilling, blasting, loading, and hauling of ore and waste to the crusher and waste storage facilities.
The mine is planned to deliver a nominal 66,688 t/d of sulfide flotation ore to the crusher.
Low-grade material between the mill cutoff and a lower stockpile cutoff is stockpiled for later processing in years 34 through 41. The total material rate for the first 15 years of the mine life starts at 97,207 kt/yr and ramps up to 112,564 kt/yr (266,320 to 308,395 t/d). The rate decreases from year 16 through the end of the mine life.
Source:

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Flow Sheet:
Summary:

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Projected Production:
Commodity | Units | Avg. Annual | LOM |
Molybdenum
|
M lbs
| 29 | 1,200 |
All production numbers are expressed as oxide.
Operational Metrics:
Metrics | |
Daily milling rate
| 66,688 tons * |
Stripping / waste ratio
| 1.7 * |
Daily mining capacity
| 272 k tons * |
Daily ore mining rate
| 66,688 tons * |
Waste tonnes, LOM
| 1,699,778 k tons * |
Ore tonnes mined, LOM
| 984,602 k tons * |
Total tonnes mined, LOM
| 2,684,380 k tons * |
Tonnes milled, LOM
| 984,602 k tons * |
Annual milling rate
| 24 M tons * |
Annual ore mining rate
| 24 M tons * |
Mining scale, tpd
| 272 k tons |
Processing scale, tpd
| 66,688 tons |
* According to 2014 study.
Reserves at January 15, 2014:
The mineral resource cut-off grade is 0.025% sulfide molybdenum, and 0.034% is the stockpile cut-off grade used for mine planning.
Category | Tonnage | Commodity | Grade |
Proven
|
320,473 k tons
|
Molybdenum
|
0.084 %
|
Probable
|
664,129 k tons
|
Molybdenum
|
0.063 %
|
Proven & Probable
|
984,602 k tons
|
Molybdenum
|
0.07 %
|
Measured
|
12,976 k tons
|
Molybdenum
|
0.033 %
|
Indicated
|
52,267 k tons
|
Molybdenum
|
0.033 %
|
Measured & Indicated
|
65,243 k tons
|
Molybdenum
|
0.033 %
|
Inferred
|
111,261 k tons
|
Molybdenum
|
0.056 %
|
Commodity Production Costs:
| Commodity | Units | |
Cash costs
|
Molybdenum
|
USD
|
7.9 / lb * USD
|
Total cash costs
|
Molybdenum
|
USD
|
8.7 / lb * USD
|
Assumed price
|
Molybdenum
|
USD
|
15 / lb * USD
|
* According to 2014 study / presentation.
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2014 Study Costs and Valuation Metrics :
Metrics | Units | LOM Total |
Initial CapEx
|
$M USD
|
......
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Sustaining CapEx
|
$M USD
|
......
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Total OpEx
|
$M USD
|
......
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Income Taxes
|
$M USD
|
......
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After-tax Cash Flow (LOM)
|
$M USD
|
......
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After-tax NPV @ 8%
|
$M USD
|
......
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After-tax IRR, %
|
|
......
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After-tax payback period, years
|
|
......
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Pipelines and Water Supply
Source:

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Mine Management:
Job Title | Name | Profile | Ref. Date |
.......................
|
.......................
|
|
Jan 6, 2023
|
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Corporate Filings & Presentations:
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