Sri R.Ravi Varma Managing Director of the firm is a post graduate in computer sciences from western Michigan University, USA and has 10 years of rich and varied experience in Infrastructure and Mining services. He is from the family of NCC group and his father Sri . R. Narayana Raju is a promoter director of NCC Limited which is one of the leading infrastructure companies in India. Mr.R Ravi Varma is also an executive Director in RRV Infra (P) Ltd., a 15 years old profit making company engaged in the execution of Turnkey Projects, Townships, Industrial Structures, Flyovers, Transmission/Distribution Lines & Substations, Internal & External Electrification, Project Electrification, Mining services. He is director in Touzen infotech IT services Pvt Ltd which is executing software projects in India & Africa ( Ghana). He is also Managing director of Sunshine Global Mining Pvt Ltd, India which is the holding company of Mackenas Gold Mining SARL, Mali.
Sri R.Rajendra Verma Director of the firm is Graduate Civil Engineer from Osmania University, Hyderabad and has 15 years of rich and varied experience in Infrastructure works, Mining Services. He is from the family of NCC group and his father Sri . R. Narayana Raju is a promoter director of NCC Limited which is one of the leading infrastructure companies in India. He is also Director in Manu Energy Systems Pvt Ltd, India, which is executing 184 MW hydro Power project at Nagaland, India. He is director in Touzen infotech IT services Pvt Ltd which is executing software projects in India & Africa ( Ghana). He is also Director in Radiant Mining Madagascar SARL, Madagascar which is into Copper mining & Trading. He is also Director of Sunshine Global Mining Pvt Ltd, India which is the holding company in Mackenas Gold Mining SARL, Mali.
Mandin Gold Mining Sarl, incorporated on November 22, 2011, is engaged in conducting underground and surface gold mining and related activities, including exploration, processing and smelting. The Company conducts surface mining at Namarena, Mali, West Africa approximately 48 sq. kms. MANDINGOLD has been incorporated for the sole purpose of identifying and acquiring potential areas with known gold deposits in the country of Mali.
Brief about the country MALI
Mali is currently the third largest producer of gold in African continent. South Africa is no1 and Ghana is no 2. Eventually Mali should take over Ghana as the 2nd largest producer of gold as many deposits are yet to come into production.
Gold Deposits in Mali.
There are five principal types of gold deposits present in Mali:
There are two kinds of licenses given according to Mali mineral law
Present scenario of the company
Mandin Goldhas approached the Govt. for exploration license of an area covering 48 sq km in the region of Namarena village around 115 km from the capital city Bamako. After acquiring the exploration license MandinGold has done detailed study of the area by taking the help of the agencies listed below:
Once the results were encouraging Mandingold has finished the feasibility and environmental studies and submitted the report to the Govt. for acquiring a petite mine license for a period of 4 years. The Govt. of Mali has granted Mandingold petite mine license for an area covering 6 sq km . For the balance area of 42 sq km Mandingold proposes to do complete exploration of the mine and submit the report to the Govt. within 3 years to request for large scale mining.
Highlights of the Project:
Pervasive gold mineralisation ranging from 1g/t to 10g/t occurs along FZ over a strike length ranging from few meters to a km.. Gold mineralisation occurs in all of the four major rock types (greywacke,diorite and quartz-feldspar porphyry), and is spatially associated with a complex alteration pattern.Alteration assemblages identified to date include calcsilicate, potassic, chlorite-calcite and carbonate and point to a mesothermal origin for gold mineralisation. Gold is associated with both arsenic and antimony dominated sulphide assemblages including arsenopyrite, pyrrhotite, pyrite, stibnite and gudmundite. Primary gold is extremely fine grained, dominantly less than 15 microns, with rare grains approaching 50 microns.
The grains of gold from primary deposits are worn down and transported to sink to the bottom of creeks and lineaments as alluvial gold. The deposit has been intensely weathered and mainly exploited soft oxide ore since start up with the current known oxide reserves expected to be mined out by 2016
The Namrana deposit is located within the Malian portion of the Kenieba-Kedougou window, a major Palaeoproterozoic inlier along the northeast margin of the Kenema-Man shield. The Birimian components of the window can be interpreted as a collage of at least two N-S trending terrains. The Kofi Formation is significantly younger and intruded by calc-alkaline batholiths dated at 2.0 - 2.05 Ga. Metamorphic grade attains green schist facies, with amphibolites grades developed locally near major intrusions.
The Namrana deposit is located in the north central section of the window and is hosted by sediments of Birimian rocks the Kofi Formation, which have been intruded by numerous felsic intrusives. The sediments consist of fine-grained greywacke, probably distal turbidites, and impure carbonates with minor tuffs and acid volcanics.
The deposit occurs in an area encompassed by coordinates 12o08'56" - 12o12'22" and 08o49'5308o55'10"", striking Fracture Zone ("FZ"), which is interpreted as a brittle-ductile splay off the structural lineaments. The FZ follows the steeply west dipping contact between greywacke to the west and impure carbonate to the east. The FZ and its wall rock are intruded by discontinuous diorite dykes, which may contain a weak mineral foliation and rarely intense ductile deformation. Quartz-feldspar-porphyry (QFP) dykes intrude younger, moderate striking and steeply west dipping faults and preserve more brittle deformational features.
|ORE PROVEN||ORE PROBABLE|
|As of December 31, 2013||Tonnes (000)||Grade (g/t)||Tonnes (000)||Grade (g/t)|
|Total proven reserves||3572||1.1|
|Total probable reserves||10348||1.4|
The reserves estimated to a cut-off over a minimum depth of 2 metres. In mining operations, measured and indicated resources that are not mineral reserves are considered uneconomic at the price used for reserves estimations, but are deemed to have a reasonable prospect of economic extraction. Calculation using tonnage with grade for contained metal should be rounded to reflect the accuracy of the estimate.
The ore is available till the depth of bed rock which is estimated to be around 30 metres. Manual mining has been done by artisanal miners till a depth of 15 metres with good recovery of gold ore .Thousands of pits are dug in a random manner with a spacing of 3 to 5 metres width between pits in the mining area. Gold bearing quartz reefs have beenidentified in the mining area as shown in the report by tecdatum.To arrive at the estimatedquantity core drilling needs to be done toa depth of 100 metres.Hence this area has good potential to develop in to a large scale mine.
Gold Technical Information and Quality Control Notes: The mineral resource estimates contained in this report have been prepared in accordance with National Instrument 43-101 Standards of Disclosure for Mineral Projects ("NI 43-101"). This can be verified by "Qualified Person" responsible for certification.
The supervision of the preparation and review of all resource and reserve estimates for MandinGOLD is Dr.Trinadha Raju , D.Eng., Mining Geology. Dr.Raju has worked in the mining industry for more than 20 years, mainly in operations, project development and consulting.
He joined MandinGOLD in April 2012 and acquired his knowledge of the Company's operations and projects through site visits, information reviews and ongoing communication and oversight of mine site technical service teams or consultants responsible for resource and reserve modeling and estimation.
The Gold Mine processing plant will consist of two identical parallel circuits, collectively capable of treating approximately half a million tonnes of saprolite ores per year. This twin-stream design allows for a degree of flexibility in plant operation and maintenance in the event of equipment failure, important in this case as local infrastructure and maintenance support for heavy industry is virtually nonexistent.
Most of the ore is delivered from the pit to a stockpile/reclaim area, adjacent to the processing plant site. The ore blend is reclaimed from the stockpile and fed to two parallel mineral sizers, a type of crusher designed to handle the softer ores. The discharge from the mills is fed to cyclones, the overflow from 11 which goes to the leach circuit where the pulp is subject to cyanide leaching while the underflow goes to the regrind mills. Following leaching, the pulp is fed to CIP adsorption tanks where the gold is absorbed onto activated carbon. This loaded carbon is stripped of its gold and the gold bearing solution is pumped to storage tanks. The stripped carbon is regenerated in an oil fired kiln and then reused. After leaching, the barren slurry after removal of the gold is pumped to the tailings dam 3 kilometres southeast of the process plant for final disposal. The gold is recovered from the solution by electroplating onto stainless steel wool cathodes. The cathodes are washed and the gold bearing sludge dried and placed in an induction furnace for smelting to produce gold bullion.
The recovery on the sulphide saprolite ore can be enhanced gravity circuit will be commissioned to treat a portion of the cyclone underflow in the grinding circuit. The circuit has allowed for improved recovery on high grade oxide ores from the satellite pits that contain a significant coarser nugget gold fraction.
Following are the Ore reserves estimated for processing (based on test pit operations), Probable resources are speculative and geologically favorable to have economic considerations that applied to them and would allow a translation into reserves.
|METHODOLOGY OF PROCESSING|
Mining is planned here using conventional open pit techniques with a carbon-in-pulp processing plant. There will be four open pits. The pit slopes have been engineered to industry standards of stability for the range of lithologies present Namarana, following risk management principles. Grade control is affected by drilling 10 metre long vertical holes on a 10metre by 5 metre grid. Ore will be transported to the ore stockpile located one kilometre from the pit and waste is disposed of in dumps adjacent to the pit.
Approximately 70% of ore will be stockpiled before processing. The ore stockpiling facility going to be located between the pit and the process plant and its purpose is twofold. Primarily, the area allows stockpiles of ore with differing oxide and sulphide mineralogy, gold grades, hardness, viscosity levels to be laid down separately. Ore is reclaimed from the stockpiles and fed into the process plant on a blended basis contributing to the efficiency of the process plant and maximising gold recovery. The second function of the stockpile is to provide a reserve of ore to sustain feed when pit operations are affected by external factors such as heavy rains.
|NAMARANA CONCESSION BLOCK|
Location and Extent:
The Namarana Concession block is located about 30 km west of the Narena city and about 115km southwest of the capital city Bamako in koulikoro Region. It is bounded by the the following latitudes and longitudes and extends for about 50 sq.km.
|OUR CONCESSION BOUNDARIES|
|A||12o 12' 22''||8o 55' 10''|
|B||12o 12' 22''||8o 50' 32''|
|C||12o 11' 58''||8o 50' 32''|
|D||12o 11' 58''||8o 49' 53''|
|E||12o 8' 56''||8o 49' 53''|
|F||12o 8' 56''||8o 52' 54''|
|G||12o 9' 26''||8o 52' 54''|
|H||12o 9' 26''||8o 53' 14''|
|I||12o 01' 27''||8o 53' 14''|
|J||12o 01' 27''||8o 53' 55''|
|K||12o 11' 16''||8o 53' 55''|
|L||12o 11' 16''||8o 54' 47''|
|M||12o 11' 56''||8o 54' 47''|
|N||12o 11' 56''||8o 55' 10''|
|VERTICAL GRADIANT MAP|
|SUGGESTED SAMPLE LOCATIONS MAP OF THE CONCESSION BLOCK|
|Open Cast Mining Methodology|
Open-pit or open-cast mining is a surface mining technique of extracting rock or minerals from the earth by their removal from an open pit or borrow. This form of mining differs from extractive methods that require tunneling into the earth, such as long wall mining. Open-pit mines are used when deposits of commercially useful minerals or rocks are found near the surface; that is, where the overburden (surface material covering the valuable deposit) is relatively thin or the material of interest is structurally unsuitable for tunneling (as would be the case for sand, cinder, and gravel). For minerals that occur deep below the surface-where the overburden is thick or the mineral occurs as veins in hard rock-underground mining methods extract the valued material.
|CLEANING PROCESS OF GOLD DONE BY VILLAGERS|