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Technical report and feasibility study
For
GS Multi Activities Co LTD Mining Company
Northern Sudan

September 2017

0

Contents
Introduction……………………………………………………………………………………………………4

Climate……………………………………………………………………………………………5
Vegetation……………………………………………………………………………………………………5

Drainage…………………………………………………………………………………………6
Objectives and scope of the present work……………………………………………………6
Regional geology of the study area…………………………………………………………………6
Office and fieldwork………………………………………………………………………………………8
Geochemical observation………………………………………………………………………………9
Surface Trenching …………………………………………………………………………………………9
Rock Samples ………………………………………………………………………………………………11
Resource estimation…………………………………………………………………………………12
Mining method…………………………………………………………………………………………14
Open Pit Mine Plan……………………………………………………………………………………14

Mine design……………………………………………………………………………………15
Bench dimensions……………………………………………………………………………15
Mine roads & ramps……………………………………………………………………………………16
Waste dump design………………………………………………………………………………………17
Mining Equipment…………………………………………………………………………………………18
Drilling and blasting………………………………………………………………………………………18
Mine Operating Costs……………………………………………………………………………………19.
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Processing………………………………………………………………………………………20
Remote Sensing Study……………………………………………………… 23
Conclusions

List of figures and tables
Figure (1) Location of study area…………………………………………………………………………………………………………5
Figure (2) Schematic Geology of the Nubian Shield……………………………………………………………………………..8
Figure (3) Traditional artisanal mining hole extending more than 30 m in depth…………………………………9
Figure (4) Artisanal Mining Activities…………………………………………………………………………………………………10
Figure (5) trench digging using excavator………………………………………………………………………………………….11
Figure (6) GS prospect trenches map position…………………………………………………………………………………12
Figure (7) bench dimensions………………………………………………………………………………………………………………16
Figure (8) mine road and ramps design……………………………………………………………………………………………..17
Figure (9) heap leaching process………………………………………………………………………………………………………22

Summary

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The concession area of the block in Northern State is under the name of GS for
mining. The company was awarded a total area of 2 gs.km. Soon after signature,
the Company carried out a reconnaissance exploration work .That has generated
positive signs on which an exploration program and estimated budget have been
designed for more detailed work. The program includes remote sensing and GIS,
based geological mapping and rock geochemical survey over the whole area of
the block to identify favorable target areas for further exploration work on
priority basis, this stage was then followed by trenching and reserve estimation,
mine design and selecting heap leaching method for ore treatment.

3

Introduction
Northern Sudan is known for its gold Mineralization potentiality, which was
Known for long period since old civilizations by its mineral potentialities and
exploration activities. The study area about 8017.8 Km2
. The literature review shows that study area is located in an area of
geology of promising gold mineralization potentiality zone. Most of activities in
the neighboring ones are associated with artisanal mining with the traditional
panning techniques. The following table indicates area with point from A to D
(Figure 1) was given first for assessment using the date collected and presented in
the current report. We will definitely give some remarks on the mineralization
Potentiality of this area and recommend the following steps and work.

4

Figure (1) Location of study area

Climate:The property is in the desert of Northern Sudan where precipitation is infrequent.
The climate is arid with a very hot season from June to September during which
the maximum temperatures range from 45°C to 55°C and rainstorms may occur.
The coolest period covers the months of January and February with daytime
temperatures of 30°C and cool nights ranging from 10°C to 15°C. The dominant
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winds depend on the season: mainly from the west or northwest during the hot
period, and from the north or northeast during the rest of the year.

Vegetation:The region is characterized by chains of hills separated by sandy valleys that
collectively form the main basin joining Khor Ariab and Wadi Amur, the latter
flowing towards the Nile.
Vegetation consists predominantly of sparse thorny shrubs and dry grasses in the
valleys. Grasses cover the valleys for several months after heavy rains, serving as
grazing grounds for sheep, goats and camels.

Drainage:The topography of the area is generally difficult and complex area, which contains
mountains punctuated by a huge number of valleys, the direction of drainage
from South to North, the highest elevation 402 and less than 350 high, the region
rough drainage.

2- Objectives and scope of the present work:Studying of the regional geology and mapping of the visited sites besides the
geochemical investigations and assessment for gold mineralization potentiality of
the concession area. The overall objective of current stage of the project is to
explore gold in the concession area and to define its general potentiality, and to
help accordingly the owner to select the most promising areas for large scale
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licensing.

3- Regional geology of the study area:The study area is composed of metavolcanics and metasediments that are
intruded by I-type and A- type granitoids. Little is known about the basement
geology around site. Relatively recent contribution on the geology of the
northern Sudan concentrated in Halfa terrene which contains both juvenile
Neoproterozoic crust and high-grade early to middle Proterozoic gneisses, mainly
west of the Nile, with pre Pan-African crustal heritage. From the work of the Stern
et al. (1994) in the area around North Dongola five basement rock units can be
recognized as Schist and strongly foliated gneisses in the south and west, overlain
uncomfortably by less deformed supracrustals including with a sequence of
metasediments and predominantly felsic metavolcanics. The three units are
intruded by syntectonic, foliated granodiorites and post-orogenic alkali granite.
An additional unit is a faulted tectonic mélange about 50Km North East of
Dongala.(Figure 2)

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Figure (2) Schematic Geology of the Nubian Shield

4- Office and fieldwork:Field work was conducted in the study area during a period from 5th November
to 7thDecember 2016. The first days of geological exploratory field trips to study
areawere mainly focused to investigate the accessibility of the Site, tracing and
sampling primary source of the gold (Chip sampling) and stream samples from the
important sources of placer gold. Geological boundaries between different rocks

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