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(Appendix No. 5)



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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

2,625 people.

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.

 Wash Plant

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

slimes pond.

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;

4. >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

synchronisation panel.

 Site Water

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

environmental discharge;

• 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

cleanup measures.

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

when required.

Based on Figure 6 it is advised that flow meters be installed in the following