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South Africa
Smokey Hills (Phokathab) Mine

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 Location:
25 km NW from Burgersfort, South Africa

  Address:
Northdowns Office Park, Block 3,
17 Georgiana Crescent
Johannesburg
South Africa
2021
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WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Fleet
  • Filings & News

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Overview

StatusCare and Maintenance
Mine TypeUnderground
Commodities
  • 4E (Pt, Pd, Rh, Au)
Mining Method
  • Narrow reef drill & blast
Mine Life2022
The mine produced its first concentrate for shipment in March 2009. The mine then went into care and maintenance in August 2012 and no mining or processing activities took place until it was reopened in January 2015. However, continuing adverse local and global economic and market circumstances led to the mine being placed in care and maintenance again at the end of March 2016.


Owners

Source: p. 13
CompanyInterestOwnership
Phokathaba Platinum (Pty) Ltd 100 % Direct
Phokathaba Platinum (Pty) Ltd (“Phokothaba”) is an incorporated Joint Venture Company established under the shareholders Agreement between Corridor and SHP (Smokey Hills Platinum (Pty) Ltd) to develop the Smokey Hills Platinum Project.

Contractors

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Deposit Type

  • Magmatic


Summary:

The Smokey Hills project is located in the central portion of the eastern limb of the Bushveld complex and is underlain by rocks of the upper critical zone, which hosts two of the more important PGE-bearing units in the Rustenburg Layered Suite: the Merensky Reef and the UG2. In the Smokey Hills Project Area, the Merensky Reef is expected to occur approximately 300 m above the uG2. However, a minimum of approximately 140 m of the Merensky Reef footwall units have been removed by erosion and therefore no Merensky Reef is preserved at the Smokey Hills project. In the central portion of the eastern limb of the Bushveld complex, five chromitite layers have been identified in the Upper Critical Zone, each of which forms the base of a cyclic unit. The cyclic units are termed, from oldest to youngest the UG1, UG2, UG3 UG3A and UG3B. Each of these chromitites carries varying concentrations of PGEs. However, concentrations in the UG1 chromitite layer in all areas of the RLS have been found to be subeconomic. The UG3, UG3A and UG3B chromitite layers are generally too thin and contain insufficient concentrations of PGE mineralisation to have any reasonable expectation to support economic extraction. The UG1 chromitite layer occurs over 100 m below the UG2. The UG3 chromitite layer is approximately 0.25 m thick and occurs approximately 15 m above the UG2. The UG3A and UG3B chromitite layers are approximately 0.1 m thick, occur approximately 5 m above the UG3 and are separated by approxim ........


Mining Methods

  • Narrow reef drill & blast


Summary:

When in production, the Smokey Hills mine utilises a combination of conventional narrow reef stoping methods with trackless equipment to remove blasted ore from underground workings. The mine plan has changed from an up-dip stoping method to a (mainly) breast stoping configuration. However, some up-dip mining is still planned for future operations. Stope panels and reef raises are drilled with hand-held jack hammers, and the blasted ore is removed from the working faces by means of scraper winches. The centre gully (reef raise) winch scrapes all blasted ore into a large muck bay. The ore is loaded in the muck bay with trackless equipment and transported in dump trucks to the concentrator plant. Access to the underground workings is via adits, which are developed on strike and reef.


Crushing and Grinding
Flow Sheet: Source


Processing

Flow Sheet: Subscription required

Summary:

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All production numbers are expressed as metal in concentrate.

Operational Metrics:

Metrics2015
Tonnes milled 308,000 t

Reserves at October 1, 2016:

CategoryTonnage CommodityGradeContained Metal
Proven 1,909,887 t 4E (Pt, Pd, Rh, Au) 4.54 g/t 279 koz
Probable 979,178 t 4E (Pt, Pd, Rh, Au) 4.59 g/t 145 koz
Proven & Probable 2,889,065 t 4E (Pt, Pd, Rh, Au) 4.55 g/t 423 koz



Heavy Mobile Equipment as of April 1, 2016:
HME TypeModelQuantity
Loader (FEL) ....................... Subscription required ....................... Subscription required
Loader (FEL) ....................... Subscription required ....................... Subscription required
Loader (FEL) ....................... Subscription required ....................... Subscription required
Truck (dump) ....................... Subscription required ....................... Subscription required
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Corporate Filings & Presentations:

DocumentYear
Management Discussion & Analysis 2018
Annual Information Form 2017
Other 2017
Technical Report 2016
Annual Information Form 2015
Annual Report 2012
Annual Report 2010
Annual Report 2009
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