Overview
| Stage | Preliminary Economic Assessment |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
|
| Mine Life | 30 years (as of Jan 1, 2015) |
Source:
p. 9,14,21,39
Century Global Commodities Corp. is now a 100% owner of Century Sunny Lake.
Contractors
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Summary:
The Rainy Lake property is located on the extreme western margin of the Labrador Trough adjacent to Archean basement gneisses. The Labrador Trough is a sequence of Proterozoic sedimentary rocks, which includes the Sokoman Formation within the Knob Lake Group. The Sokoman Formation is an iron formation consisting of a continuous stratigraphic unit that thickens and thins throughout the Labrador Trough.
The thickness of the Sokoman Formation varies between 120 and 240 meters and is a typical Lake Superior type iron-formation (taconite) consisting of banded sedimentary rock composed principally of layers of iron oxide, magnetite and hematite. Iron-rich bands are intercalated with cherty bands composed of variable amounts of silicate, carbonate, sulphide, ferruginous slaty iron formation, and carbonaceous shale. The Sokoman Formation is subdivided into eight stratigraphic subunits: Lean Chert ("LC"), Jasper Upper Iron Formation ("JUIF"), Green Chert ("GC"), Upper Red Chert ("URC"), Pink Grey Chert ("PGC"), Lower Red Chert ("LRC"), Lower Red Green Cherty ("LRGC"), and Lower Iron Formation ("LIF").
On the Rainy Lake property the Sokoman Formation is thickened by shallow east dipping northwestsoutheast thrust faults and is gently folded resulting in unusual thickness of iron mineralization reaching 400 meters locally. The area investigated by drilling was named the Full Moon iron deposit.
Summary:
The mining method selected for the Project is a conventional open pit, drill and blast, truck and shovel operation with 10 meter high benches. Topsoil and overburden will be stripped and stockpiled for future reclamation use. The mineralization and waste rock will then be drilled, blasted and loaded into rigid frame haul trucks with hydraulic shovels. The mineralized material will be hauled to the primary crushers and the waste rock will be hauled to the waste rock pile.
The open pit design was done with an inter-ramp angle of 52° for the configuration of the final pit wall and a haul road width of 31m.
A 30 year production schedule (mine plan) was developed for the Project, which targets the production of 20 Mt of iron concentrate per year. The mine plan was used to estimate the fleet of mining equipment which resulted in 20 haul trucks (227 tonne), 3 hydraulic shovels (26.5 ma bucket), 2 wheel loaders (1,100 kW), 3 production drills as well as a fleet of support and service equipment.
Source:
Summary:
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Projected Production:
| Commodity | Units | LOM |
|
Iron
|
kt
| 597,000 |
All production numbers are expressed as concentrate.
Operational Metrics:
| Metrics | |
|
Waste tonnes, LOM
| 153 Mt * |
|
Total tonnes mined, LOM
| 1,763 Mt * |
|
Plant annual capacity
| 17 Mt of iron pellets * |
|
Mining scale, tpd
| 168,000 t |
* According to 2015 study.
Reserves at March 31, 2016:
| Category | Tonnage | Commodity | Grade |
|
Indicated
|
7,260 Mt
|
Iron
|
30.18 %
|
|
Inferred
|
8,694 Mt
|
Iron
|
29.86 %
|
Mine Management:
| Job Title | Name | Ref. Date |
|
.......................
|
.......................
|
Jul 27, 2021
|
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