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PROPOSALS FOR EMPLOYMENT AND TRAINING OF
CITIZENS OF ZAMBIA
(Appendix No. 5)
KAGEM MINING LICENCE
There are currently 421 employees on the mine site. Housing is being expanded and
improved on the site and it is estimated that there will be 525 employees at the
optimal level of production. This is a significant number of employees for an emerald
mine and an estimate of the beneficial multiplier effect of 5 ranges from 1,970 to
Contractors are hired for waste mining, drilling, civil engineering and security. There
are about 30-40 contracted employees at a given point of time and when there is
contract mining going on the number swells to about 100.
There is an on site training centre which imparts professional training to the
employees. Company also pursues a policy of sending selected employees for
advanced training in order to hone the skills.
The wash plant has a rated capacity of 50 T/hr. The ore will be trucked to the wash
plant and dumped on to the ore stockpiles around the wash plant. A front-end loader
will remove ore from the ore stockpiles and feed it into the 50t feed static grizzly feed
Process water will be added using a monitoring gun as the ore is fed into the static
grizzly screen. Overflow material +400mm in diameter will be fed onto the >400mm
transfer conveyor to the oversize ore stockpile. The material <400mm will pass onto
a vibrating grizzly screen with 150mm bars where more process water is added. The
overflow material >150mm will be fed onto the primary crusher feed conveyor.
The conveyor will feed the >150mm material into the primary crusher feed chute and
the primary crusher. The crushed material will then be fed out of the primary crusher
discharge chute onto the double deck vibrating screen feed conveyor.
The underflow <150mm material from the vibrating grizzly, will pass into the scrubber
feed chute, where more process water will be added, and then into the scrubber.
Process water is added to the scrubber.
The trommel undersize material will be fed to the trommel undersize pump which will
pump the <3mm material to the spiral classifier. The classifier will direct <3mm
undersize material to the slimes pond and >3mm material to the 3 < 60mm stockpile .
The scrubber oversize material <150mm will pass into the scrubber oversize chute
onto the secondary crusher feed conveyor. The feed conveyor will deliver the ore to
the secondary crusher feed chute and into the secondary crusher. The crushed ore
will pass out of the secondary crusher discharge chute onto the double screen feed
The scrubber produces a product in two classes: 3 < 60mm and 60 < 150mm. This
material will pass into the trommel product transfer chute. The trommel product will
be delivered by the double screen feed conveyor into the double screen feed chute.
The double deck vibrating screen will produce three products. The >60mm product
from the top screen will be transferred to the secondary crusher feed conveyor. The
second screen will produce a 3 < 60mm that will be transferred to the drum scrubber
feed conveyor. The double screen undersize material >3mm will be fed into the
The drum scrubber feed conveyor will transfer the ore to the drum scrubber. The
drum scrubber will feed a hexagonal screen that will produce 5 products. The >3mm
product will be transferred to the tailings pond. The other four products:-
1. 3 < 10mm;
2. 10 < 20mm;
3. 20 < 40mm;
will feed on to the stockpile feed conveyor and onto the 3 < 60mm stockpile.
The plant will be powered by two 250kVA generators which will be controlled by the
Site Water Uses
The main uses of water on the Kagem Mine site are>
• Process water for the wash plant;
• Wash water for the mine equipment fleet;
• Drilling activities during the exploration program;
• Dust minimisation through spraying activities along roads; and
• Mine camp water for washing and cleaning purposes.
Site Water Management
A site water management plan shall be developed to prevent any adverse impact on
adjacent watercourses and groundwater, and to conserve natural water resources.
The main aims of this plan are to>
• Separate clean water from contaminated water;
• Monitor and if necessary treat mine effluent and surface runoff prior to
• Develop, maintain and monitor a site water balance to minimise the
consumption of freshwater, increase internal recycling of waste water and
reduce effluent released to the environment;
• Develop a site drainage network to ensure the separation of clean runoff from
contaminated mine water;
• Develop a monitoring program for surface water, groundwater, effluent
streams and flow rates;
• Ensure regular monitoring and inspection of the mine site drainage system
and pollution control facilities;
• Ensure compliance with Zambian drinking water quality standards and mine
effluent guidelines and where parameters do not exist use the equivalent
World Bank guidelines; and
• Prepare formal emergency response procedures for accidental spills and
Currently a process water dam in the existing wash plant complex will supply the
wash plant with water. The process water dam will be approximately 20m long and
20m wide with a storage capacity of 2000m3, based on the consumption requirement
of the process plant. The process water dam is lined with concrete. Water will be
supplied to the process water dam from the Southwest dam via a pump and HDPE
pipeline when required.
At present one pump is being used to dewater the open pit which is flooded with a
mixture of rainfall, surface runoff and groundwater. The dewatering system will be
extended to allow 3 70m3/hr pumps to operate in the wet season. Two of these
pumps will continue to operate in the dry season. This is equivalent to 5,040m3/d.
All dewatering water from the open pits will be released to surface waters. The
dewatering water will be pumped to a settlement pond. This pond should have an
adequate storage capacity to allow the water to settle out solids. It is also based on
the volume of dewater being pumped from the open pits. The water in the open pit at
60m is currently precipitation. The possibility of pumping the mine dewatering water
to the wash plant has been reviewed. The distance to transfer the water to the
process water dam is large. Gravity fed systems of transferring the dewatering water
are impeded by the local topography. Therefore the dewatering water will be sent to
a settlement pond and discharged to the Kafubu River.
The mine camp water is supplied via two sealed groundwater boreholes (GW01 and
GW02) with submersed pumps and overhead storage tanks. These boreholes supply
water around the mine camp.
Water required for exploration activities will be supplied to the drill rig via a pipeline to
the nearest water source or supplied by portable water tanks. Sumps will be
developed at each drill site to capture contaminated water and suspended solids.
Drinking water is provided by Kagem as bottled water from off site.
Site Water Flow Sheet
At present there is no water balance for operations at the Kagem site. Some
estimates have been made for key areas of the process. Areas where flow
monitoring will be necessary have been highlighted. Figure 6 below shows a general
water flow sheet for the operations at Kagem Mine. The installation of flow meters on
key feeds will assist in maximising water usage and pumping efficiency. During
operations a detailed water flow sheet will be developed.
Figure 6 Site Water Flow Sheet
The groundwater boreholes GW01 and GW02 are pumped to meet the requirement
of the mining camp. They are each equipped with a water storage tank that is filled
Based on Figure 6 it is advised that flow meters be installed in the following