The effect of planned prospecting near Rayton PDF Print E-mail
News - Aktueel
Tuesday, 23 June 2015 02:23
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Randquip plans on prospecting for diamonds on portion six, Kaalfontein 513 JR and portion 20, Rietfontein 366 JR. They want to search for general, alluvial and kimberlite indications of diamonds.
The prospecting area applied for is 304.740 hectares. It is about 1 km from Rayton and 10 km from Cullinan. The proposed prospecting will be conducted over five years and will include on-site contractors’ camps.

The application for prospecting right was accepted by the Department of Mineral Resources (DMR) on 22 April. But, before Randquip may proceed, it has to undertake an environmental impact assessment (EIA) in terms of the National Environmental Management Act.

Kimopax has been appointed to do the prospecting application, public consultation process and EIA and to submit the relevant documentation to the DMR for a decision about the project.

A background information document on the project was made available during the first week in June. This document describes the proposed development, minerals to be mined and the methods that are going to be used to mine the minerals.


The areas concerned are portion six, Kaalfontein 513 JR and portion 20, Rietfontein 366 JR

Stages
The prospecting work programme is structured around three fundamental stages: area selection; data gathering; and data evaluation. This programme will consist of non-invasive and invasive prospecting methods.

Non-invasive activities will include: a desktop study on data availability on the geological model; geological mapping with ortho-photos, aerial photography and satellite imagery; and geophysical surveys.

Invasive activities will include: excavations; drilling; drill evaluation; and resource delineation drilling.

Residents in the area can expect the process to start with the identification of exposed geological structures and outcrops, through aerial photo interpretation, satellite image interpretation and also by walking on the farms.

There will be ground geophysical surveys over selected target areas on a 200 m by 200 m grid. The presence of concealed mineralization can only be confirmed and outlined by drilling.

Rig
The drill rig will be brought onto site for drilling and will move from one site to another until the desired number of prospecting holes has been drilled. It can take from a couple of days to more than a month to drill one site, depending on technical problems or geotechnical rock conditions.

Diamond boreholes will be drilled, which will be followed up by an exploration drilling programme.

Diamond core drilling will be done in phases and the holes will be about 50 m deep.

During the first part of the drilling operation the drill bit would crush the rock into small particles called cuttings. The cuttings will be removed from the bottom of the hole by the drilling fluid. Once the top section of the hole has been drilled, a steel casing would be inserted to secure the wall of the hole and also to prevent any groundwater contamination.

The drill core will be transported to an on-site core shed for temporary storage. The different rock samples will be sent for testing at an accredited laboratory.

Water
Water will be sourced off site when no water is available on site. Water will be circulated throughout the drilling operation and is needed to cool the drill rig. Circulated water will be stored in temporary plastic lined sumps and cleaned with oil-water separators for re-use.

Bulk
Bulk sampling will be done to evaluate the economic potential of the deposit. This is carried out in three stages: microdiamond sampling; character sampling; and true bulk sampling.

Microdiamond sampling involves collecting samples of 20 to 70 kg to provide an initial evaluation. In character sampling 100 to 500 kg of materials are collected and processed.

Roads
Activities associated with drilling will include temporary access roads where existing access roads cannot be used. These access roads will be tracks and will be used for the duration of the prospecting phase.


A typical prospecting drill site
Photo: Kimopax

Construction
There will be no construction activities because no permanent infrastructure will be established.

Activities will only relate to temporary access roads and the clearing of vegetation on prospecting sites and drill sites.

A number of small drilling sample sites will be cleared from vegetation, small shrubs, grass and top soil. Indigenous trees will not be removed. The area to be cleared will generally not exceed 20 m by
20 m.

Topsoil will be stored in dumps for future rehabilitation and these dumps will be covered during windy and rainy months to limit soil erosion.

Accommodation
There might be one, two or more active prospecting sites at any given time. Site establishment will include setting up of contractors’ camps in temporary accommodation such as mobile homes, and bringing equipment, including drill rig service and mechanical equipment onto site.

The drill crew is not allowed to use fire for cooking and waste will be separated on site.

Environmental impacts include: generation of waste; domestic and hazardous (hydrocarbons) waste; soil contamination in the event of hydrocarbon spillages; soil erosion; water pollution; and a major hydrocarbon spill could lead to surface water pollution if left unattended.

Rehabilitation
As a drill rig moves off a particular site, the site will be rehabilitated. All hydrocarbons will be removed from the site and separated from the water. Other domestic waste drums will be removed from the site and waste will be disposed of at a registered municipal waste management facility. No waste is to be burned or buried.Stockpiled topsoil will be spread evenly over the area and vegetation establishment will be monitored.

People are invited to register as interested and affected parties by 2 July and to participate in the EIA process by identifying issues of concern. Various focus group meetings with interested and affected parties have been planned for June and July.

Contact Mpho Morotoba of Kimopax at tel: 011-312-9765; fax: 011-312-9768; fax to e-mail:
086-758-4413; or e-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

 
 

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