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Thor Explorations Announces an Updated Independent Mineral Resource Estimate and Preliminary Feasibility Study Progress Update at its Segilola Gold Project in Nigeria

Not for Dissemination in the United States or for Distribution to U.S. Wire Services

VANCOUVER, British Columbia, Sept. 11, 2017 (GLOBE NEWSWIRE) -- Thor Explorations Ltd. (TSX VENTURE:THX) (“Thor” or the “Company”) is pleased to announce an updated independent mineral resource estimate following the completion of the current phase of drilling at its 100% owned Segilola Gold Project.

Figure 1: Oblique view of the Segilola resource model
Figure 1: Oblique view of the Segilola resource model

Figure 2: Longitudinal Section showing gram-metre (grade x true thickness) contours with potential extensions of high grade zones
Figure 2: Longitudinal Section showing gram-metre (grade x true thickness) contours with potential extensions of high grade zones

Photos accompanying this announcement are available at

The Company is also pleased to announce that it expects to complete the ongoing Preliminary Feasibility Study (“PFS”) on the Segilola Gold Project in October 2017.


  • An increase in average grade of indicated resource from 3.8g/t to 4.3g/tAu.
  • Addition of inferred resource of 305,000 ounces at 4.7g/tAu
  • PFS scheduled for completion in October 2017

Segun Lawson, President & CEO, commented "We are working hard to progress the project to implementation. The current drilling program has not only delivered a good indication of the resource potential external to the pit shell being considered in the PFS, but has also enhanced our understanding of the orebody, resulting in a significant uplift in average grade, an expansion of the overall resource base and an improved level of confidence in pit optimisation and mine design parameters. The PFS is well progressed and we look forward to presenting the results of the study along with the maiden reserve for the Segilola project.”

Updated Independent Mineral Resource

Table 1: Mineral Resource Statement, Segilola Gold Deposit as at September 11, 2017

Classification Within Whittle Shell
(Open Pit Resource)
External to Whittle Shell
(Underground Resource)
(0.64g/tAu cut off) (2.5g/tAu cut off)  
Indicated 3,926,000 4.3 539,000 111,000 4.7 17,000 4,037,000 4.3 556,000
Inferred 835,000 5.1 137,000 1,195,000 4.4 169,000 2,030,000 4.7 306,000
  1. For reporting purposes, based on the ‘reasonable prospects of economic extraction’ test, Mineral Resources are reported within an optimised pit shell, at a cut off grade of 0.64g/t gold, mining recovery of 95%, processing recovery of 96%, gold price of US$1,600/oz, processing costs of $23/t including G&A and grade control. Mineral resources, with potential for economic extraction by underground mining methods, external to the optimised pit shell, are reported at a cut-off grade of 2.5 g/t gold.
  2. The mineral resource estimates have been prepared independently in accordance with the classification criteria of the National Instrument 43-101 Standards of Disclosure for Mineral Projects ("NI 43-101") and in accordance with the CIM Standards on Mineral Resources and Reserves, Definitions, and Guidelines prepared by the CIM Standing Committee on Reserve Definitions and adopted by the CIM Council.
  3. The mineral resource estimates have been prepared by Chris Speedy (MAIG,#5349) of Auralia Mining Consulting Pty Ltd, who is a qualified person under NI 43-101.
  4. Mineral resources which are not ore reserves do not have demonstrated economic viability.
  5. The mineral resource estimate is reported from an ordinary kriged block model.
  6. Unless otherwise noted, the Company's mineral resources are estimated using appropriate lithological interpretations, grade compositing and grade estimation techniques.
  7. The Company has adopted industry-standard procedures for sampling, data verification, compiling, interpreting and processing the data used to estimate ore reserves and mineral resources.
  8. Numbers may not add due to rounding.

/EIN News/ -- A technical report in support of the mineral resource estimate described herein and prepared in accordance with National Instrument 43-101 and Industry Guide 7 will be filed on SEDAR within 45 days.

Alfred Gillman, Group Exploration Manager commented: “With the forthcoming completion of the PFS, together with the demonstrated resource upside as defined by the inferred material within the Whittle shell, we expect to proceed directly towards a Definitive Feasibility Study. We anticipate that a large proportion of the inferred material reported within the Whittle shell will be converted to indicated in preparation for the DFS. In addition, the discovery of several high grade hanging wall lodes has highlighted the potential for down-dip underground operations.”

Preliminary Feasibility Study

The Company had previously announced its intention to undertake a Preliminary Economic Assessment (“PEA”). However, following a GAP analysis on the existing project technical and design work and a review of development options, the Company has elected to advance directly to completion of a PFS with pit optimisation and mine design work being undertaken on the updated independent resource (presented above).

In the preparation of the PFS, the Company has drawn on the significant technical studies and processing design that had been undertaken on the project prior to acquisition by the Company. The Company has supplemented this information with further technical work and renewal of cost information where applicable.

The PFS is being compiled by Auralia Mining Consulting Pty Ltd of Perth, Western Australia.

Table 2: Inputs for PFS

Input Party
Contract Mining PW Mining / SFTP
Resource and Mining Auralia Mining Consulting Pty Ltd
Geotechnical Peter O’Bryan & Associates
Hydrogeology Peter Clifton & Associates
Metallurgical Testwork AMMTEC
Engineering Sedgeman
Tailings Storage Facility D E Cooper & Associates
Water Supply Dam D E Cooper & Associates
Environmental and Social Segilola Resources Operating Limited, with inputs from the approved project EIA

The project description conforms with the project’s existing 25 year Mining License (renewed in September 2016) and Environmental approvals.

Exploration Potential

During August, Thor completed a 15 hole diamond drilling program that was designed to test for potential in the areas external to the existing indicated resource. Results received to date are shown in Table 3 below. Results for the SGD170, the last hole in the program, are pending.

The program was successful in identifying four high grade down-dip trends beneath the indicated resource. Notably, several narrower but higher-grade lodes, locally containing abundant visible gold, were discovered in the hanging wall to the main (footwall) lode. Intersections included 3m true width at 18.7g/tAu, 2.4m true width at 11.4g/tAu and 2.8m true width at 15.6g/tAu. Further work is justified to convert the substantial amount of inferred resource and unclassified (unreported) material.

These lodes appear to have different controls and have a more vertical continuity over shorter strike-lengths (Figure 2). These additional lodes contributed significantly to the inferred resource both within and external to the Whittle shell. The discoveries have provided an exciting opportunity for the potential development of an underground operation.

Table 3: Segilola Gold Project: Drillhole Intersections

  HOLE ID Easting Northing RL Total
Azimuth Dip From
  SGD155* 701624 831150 370 218 90 -60 171.0 172.8 1.8 1.6 3.2
                190.0 208.8 18.8 16.3 4.7
  includes           196.8 199.6 2.8 2.4 11.4
  and           207.0 208.8 1.8 1.6 22.3
  SGD156* 701627 831150 359 268 90 -72 198.7 203.0 4.3 3.0 18.7
  includes           198.7 201.9 3.2 2.1 24.9
  SGD157* 701626 831150 359 296 90 -80 237.5 241.9 4.4 2.8 15.6
  includes             237.5 240.0 2.5 1.6 26.0
  and             247.8 249.5 1.7 1.1 4.8
  SGD159* 701544 831050 361 288 90 -60 252.0 258.7 6.7 5.6 1.4
  includes             254.0 258.7 4.7 4.1 1.7
  SGD160* 701540 831050 360 341 90 -75 306.0 307.0 2.0 1.8 2.0
  SGD161*  701540 831050 361 302 90 -65 262.8 266.8 4.0 3.1 4.3
  SGD162* 701490 830800 351 332 90 -55 299.5 302.0 2.6 2.5 4.9
  SGD163 701475 830804 362 290 90 -60 240.0 241.0 1.0 0.8 1.3
  and             268.4 270.7 2.3 2.0 6.3
  SGD166 701476 830398 300 217 90 -80 186.8 190.3 3.5 2.9 2.6
  includes             188.6 189.5 0.9 0.8 4.1
  SGD167 701735 831640 324 198 90 -60 147.8 150.2 2.4 2.1 8.5
  Includes           149.2 150.2 1.1 0.9 18.7
  SGD170 701871 831977 325 136 90 -80 assays pending   

*reported previously
Average grades calculated using 0.5g/tAu lower cut off
High-grade included zones calculated at 3g/tAu lower cut off

The following holes had no significant result:

SGD158 701604 831250 362 276 90 -66
SGD164 701480 830750 386 264 90 -60
SGD165 701526 830604 316 243 90 -83
SGD168 701304 830020 293 363 90 -80
SGD169 702125 832869 346 97 90 -80

Notifications to Investors

About the Segilola Gold Project
The Segilola Gold Project is located in Osun State of southwestern Nigeria approximately 120km from Lagos. High grade gold mineralisation is developed within Upper Proterozoic gneissic and schist sequences that are oriented parallel to the boundary between the West African Craton and the Pan African province. At Segilola, gold mineralisation extends from surface to a depth of up to 300m down dip over a strike length of 2km. The project area is served by good infrastructure that includes a sealed road to the proposed development site.

The Segilola Gold Project is 100% owned by Thor. It is fully permitted, with the mining licence renewed in September 2016 for a period of 25 years.

Qualified Person
The above information has been prepared under the supervision of Alfred Gillman (Fellow AusIMM, CP), who is designated as a “qualified person” under National Instrument 43-101 and has reviewed and approves the content of this news release. He has also reviewed QA/QC, sampling, analytical and test data underlying the information.

The Independent Mineral Resource was completed by Mr Chris Speedy (MAIG, #5349), who is designated as a “qualified person” under National Instrument 43-101 and has reviewed and approves the content of this news release. The independent mineral resource estimate was completed using data provided by Thor Explorations Ltd, no issues were found during the review of all supplied data.

About Thor
Thor Explorations Ltd. is a Canadian mineral exploration company engaged in the acquisition, exploration and development of mineral properties located in Nigeria, Senegal and Burkina Faso. Thor holds a 100% interest in the Segilola Gold Project located in Osun State of Nigeria and a 70% interest in the Douta Gold Project located in southeastern Senegal. Thor also holds a 49% interest in the Bongui and Legue gold permits located in Houndé greenstone belt, south west Burkina Faso. Thor trades on the TSX Venture Exchange under the symbol “THX”.

Segun Lawson
President & CEO


Tel:  1.778.373.0102
Fax:  1.604.639.4670

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