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WHERE WE ARE

Challenging ourselves to bring

new and original ways of thinking

OUR PROJECTS

Tandem Liber Holdings currently runs four projects in Sierra Leone whereby the prime goal of the projects is establishing JORC (NI 43-101) and secondary to establish a mining operation.

In total 52 mineral and precious metal resources can be found within the projects, of which 14 are commercially viable for mining exploitation.  Columbite, Gold, Tantalite and Niobium are the prime resources of our operations and internal valuations. The minerals Columbite, Tantalite and Niobium are derived from an ore known as Coltan.

Area 1 (76,5 sq.km.)

  • The area has a surface of 76.5 sq. km in size. Of this area approximately 50% is highly mineralized, resulting in about 4,000 ha suitable for mining alluvial indicated Gold and Coltan, 2,000 ha for Gold and 2,000 ha for Coltan

  • Overall production is based upon alluvial Gold and Coltan of which Gold is the mineral primarily targeted in Area 1. Valuation is based upon Gold and Coltan but there are several other minerals that will be recovered in the process at little to no additional costs.

  • This area holds an existing railway and loading depot in Area 1, which leads straight to the coast port of Sierra Leone. The average depth for mining of 2.5 meters plus 1.5 meter thickness pay gravel.

  • Average grades are: 1.76 gram of Gold and 3kg of Coltan per situ mt3 of pay gravel.
    Exploration showed that these values are conservative.

 

Calculation for alluvial indicated Gold:

  • 10,000 m2 x 1.5 m = 15,000 m3 pay gravel

  • 15,000 m3 x 1,460 situ kg/m3 = 21,900,000 kg = 21,900 metric ton pay gravel

  • 21,900 mt x 1.76 gr/ton = 38,544 gr = 1,239 troy oz Gold per hectare

  • 1,239 troy oz x 2,000 =

    2.4 million troy oz Gold

 

Calculation for alluvial indicated Coltan:

  • 10,000 m2 x 1.5 m = 15,000 m3 pay gravel

  • 15,000 m3 x 1,460 situ kg/m3 = 21,900,000 kg = 21,900 metric ton pay gravel

  • 21,900 mt x 3 kg/ton = 65,700 kg Coltan

  • 65,700 kg x 2,000 ha =

    131,400 metric ton Coltan

Download location details (pdf)

Area 9 (140 sq.km.)

  • The area has a surface of 140 sq. km in size. Of this area nearly 100% is highly mineralized, resulting in large portion of the area suitable for mining.

  • Due to the large number of primary Gold sources we only used 3% of the area, 4,200 ha of the most prospective alluvial locations.

  • The targeted minerals in Area 9 is Gold and the calculation for Gold based on comparison to Cluff’s (Amara Gold) one proven primary source target of 2.8 million oz.
    Valuation is based upon Gold only but there are several other minerals that will be recovered in the process at little to no additional costs.

  • The average depth for alluvial mining of 2.5 meters. Primaries from 60 meters beginning depth to 240 meters deep.

  • There are 14 primary sources of Gold, where there are strong indications each of the sources hold at least 1.000.000 troy oz.’s of Gold.

 

Calculation for alluvial indicated Gold:
 

  • 10,000 m2 x 1.5 m = 15,000 m3 pay gravel

  • 15,000 m3 x 1,460 situ kg/m3 = 21,900,000 kg = 21,900 metric ton pay gravel

  • 21,900 mt x 1.76 gr/ton = 38,544 gr = 1,239 troy oz Gold per hectare

  • 1,239 troy oz x 4,200 ha =

    5.2 million troy oz alluvial Gold

    14 million troy oz primary Gold

Download location details (pdf)

Area 2 (88 sq.km.)

  • The area has a surface of 88 sq. km in size. This is highly mineralized, resulting in approximately 4,400 ha suitable for mining. The targeted minerals in Area 2 are Gold and Coltan.

  • Overall production is based upon alluvial Gold and Coltan, of which, Coltan is the mineral primarily targeted in Area 2. Valuation is based upon alluvial Gold and Coltan only, no primary sources included. There are several other minerals that will be recovered in the process at little to no additional costs.

  • The average depth for alluvial mining of 2.5 meters.

  • Average grades are: 1.76 gram of Gold and 3kg of Coltan per m3 pay gravel. Exploration showed that these values are conservative.

  • There are 3 primary sources of Gold, where there are strong indications each of the sources hold at least 1.000.000 troy oz.’s of Gold

 

Calculation for alluvial indicated Gold:

  • 10,000 m2 x 1.5 m = 15,000 m3 pay gravel

  • 15,000 m3 x 1,460 situ kg/m3 = 21,900,000 kg = 21,900 metric ton pay gravel

  • 21,900 mt x 1.76 gr/ton = 38,544 gr = 1,239 troy oz Gold per hectare

  • 1,239 troy oz x 2,200 ha =

    2.7 million troy oz alluvial Gold

    3 million troy oz primary Gold

 

Calculation for alluvial indicated Coltan:

  • 10,000 m2 x 1.5 m = 15,000 m3 pay gravel

  • 15,000 m3 x 1,460 situ kg/m3 = 21,900,000 kg = 21,900 metric ton pay gravel

  • 21,900 mt x 3 kg/ton = 65,700 kg Coltan

  • 65,700 kg x 2200 ha =

    144,540 metric ton Coltan

Download location details (pdf)

Area 10 (50 sq.km.)

  • The area has a surface of 50 sq. km in size. Of this area 50% is highly mineralized and minable, resulting in 2,500 ha suitable for mining. The targeted minerals in Area 10 is Coltan.

  • Overall production is based upon alluvial Coltan only but there are several other minerals that will be recovered in the process at little to no additional costs.

  • The average depth for mining of 2.5 meters.

  • This area holds important primary sources for Coltan

 

Calculation for Coltan:

  • 10,000 m2 x 1.5 m = 15,000 m3 pay gravel

  • 15,000 m3 x 1,460 situ kg/m3 = 21,900,000 kg = 21,900 metric ton pay gravel

  • 21,900 mt ton x 3 kg/ton = 65,700 kg Coltan

  • 65,700 kg x 2,500 ha =

    164,250 metric ton Coltan

Download location details (pdf)

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