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Deep-South Resources Inc
Symbol DSM
Shares Issued 66,103,357
Close 2019-04-18 C$ 0.10
Market Cap C$ 6,610,336
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Deep-South starts metallurgical test work at Haib

2019-04-18 12:02 ET - News Release

Mr. Pierre Leveille reports

DEEP-SOUTH STARTS METALLURGICAL TEST WORK ON ORE FROM ITS HAIB COPPER PROJECT IN NAMIBIA

Deep-South Resources Inc. has commenced its metallurgical test work, via Mintek, on stockpile material from the Haib copper project in Namibia. The test work program is managed by Mineral Engineering Technical Services of Australia.

Deep-South has provided Mintek with about 1.8 tonnes of ore sample from a large stockpile that was extracted during a previous sampling campaign. The sample contains chalcopyrite as the main copper mineral. The aim of the program is to test the amenability of the ore to microbially assisted heap leaching. The test work will produce data for an eventual commercial pilot heap leach campaign.

Since 2003, heap leaching technologies have evolved substantially. Codelco has successfully used microbially-assisted heap leaching of copper sulphide ore containing chalcopyrite since 2014 at its Radomiro Tomic mine in Chile. Other operations in Chile have also piloted microbial assisted heap leaching of chalcopyrite ores.

The program will also focus on testing the amenability of high pressure grinding rolls and test the acid consumption of the heap leaching process.

Test work summary

The bulk head sample will be crushed down to negative 12.5 millimetres with a jaw crusher. The jaw crusher product will then be subsampled, and crushed with an HPGR to negative five mm, negative 3.35 mm and negative two mm, respectively. Subsamples from each crush size will be removed for curing acid optimization tests, assay by size (four size classes), geomechanical tests and column leach tests. Additional head sample will be milled to 80 per cent passing 75 m for chemical head assay by inductively coupled plasma atomic emission spectroscopy, sequential copper (acid-soluble, cyanide-soluble and residual copper). Acid consumption (iso-pH) tests and batch stirred tank amenability tests will be performed on the head sample. Mineralogy (X-ray crystallography and scanning electron microscope) will be performed on the negative two mm head sample. The column leaching test will be carried out at a temperature of 60 degrees for a total duration of 200 days. However, interim results will be available weekly.

About Mintek

Mintek is South Africa's national mineral research organization established in 1934 to assist in ensuring sustainable growth in the minerals and metal industries through research, development and innovation. The organization has grown over the years into an internationally competitive, respected research and development centre of metallurgical and mineral processing technologies. Mintek's biotechnology division has been involved in the development of tank and heap bioleaching technologies for over 30 years. Mintek also specializes in hydrometallurgy, including leaching, precipitation, solvent extraction and electrowinning.

About Mineral Engineering Technical Services

Established in 1988, METS provides a range of services in the fields of minerals processing, hydrometallurgy and pyrometallurgy. METS is the engineering company that produced Deep-South's preliminary economic assessment disclosed on Feb. 26, 2018.

About Deep-South Resources Inc.

Deep-South Resources is a mineral exploration company largely held by Namibian shareholders and management with 17 per cent and Teck Resources Ltd. with 28 per cent of Deep-South share capital. Deep-South currently holds 100 per cent of the Haib copper project in Namibia, one of the largest copper porphyry deposits in Africa. Deep-South's growth strategy is to focus on the exploration and development of quality assets, in significant mineralized zones, close to infrastructure and in stable countries.

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