Presented byChandra Bose (MAusIMM)

Exploration Geologist

“Geomodelling, Resource & ReserveEstimation and Pit optimization”

Introduction

Geo - Modelling

Resource & ReserveEstimation

Pit optimization

Software: Gemcom Minex, Surpac,Minescape, Vulcan, 3D AutoCAD

Geo-Modelling•Easting, Northing, Collar, Total depth, Azimuth, Dip, type(Coring

& Non-coring)Borehole data

•Borehole ID, From, to, Thickness, Rock typeBorehole lithology

•Borehole ID, From, to, Thickness, Seam ID/Ore NameSeam/Ore mineralization

•BHID, Ore name, respective elements like Fe, Si, S, Ca, K, P, etc.Quality (Assay) data

•Easting, Northing, Collar (Surface Reduced Level (SRL))Topography

Mining Block BoundaryCoordinates

( All the inputs should be available in CSV format)

Geo-Modelling

3D Borehole section

Geo-ModellingInterpretation from Geo-Modelling

• Fault position (Structural Elements)• Roof contour• Floor contour• Iso-Core contour (thickness)• Iso-Grade contour• Iso-Depth contour

Geological cross section• Along strike• Along dip

Delineation of In crop /outcrop of ore body/coal seams etc.

Borehole profile

(Generate in string format than exported into DXF/DWG format)

Geo-Modelling

Borehole section Borehole correlation

Geo-Modelling

3D depict Ore body positions underneath surface

Depict integrated with Floor, Iso-core, Iso -grade and Fault position of mineralized zone

Resource and Reserve Estimation

Resource and Reserve EstimationResource categorization

Reserve categorization

Resource and Reserve Estimation

Iso-core grid

Density / Specific gravity

Recovery factor• Considering Geological disturbance and mining loss

Topo grid

Quality grid

Reserve Estimation

Geological ReservesThickness wise

Grade wise

Depth wise

Mineable Reserves

Extractable Reserves

Barrier - infrastructure, Bench, conveyor belt etc.

In suite reserve underneath Reserves

Cut off depth

Generally mineable reserve (OP- 60 % & UG 30 – 40% Recovery)

Extractable thickness

Mineable loss/ Dilution

Resource and Reserve Estimation

Pit Optimization

Prior to the Pit Excavations i.e. Axis Trench cutting design

Mine infrastructures and surface pit head designs includes ore stock yards

Box cut of Open Pit Design / Mine Layout

Year wise Pits/Mine Layouts with desired production figures etc.

Periodical Face wise Opencast Mining operational designs suitable to the machinery input and targetedproduction outputs

Haulage Roads layout mine designs

Pumping layout designs

Pit Optimization

Electrical /substations Layouts

OB Dumping layouts and waste dump & topsoil dumps management pit designs etc.

Internal dumps planning and Remanding dumping programing etc.

Conceptual mine planning pit design

Mine closure and Land use in the mining project designs etc.

Mine Environmental management and impact designs

Mining economics estimations and profit and loss details planning’s etc.

Ore beneficiation plants planning and profitable mine dispatches technics etc.

Mine funding and revenue programing from the beginning of the projects also can be estimated withthis software

Pit Optimization

Pit Boundary

Slope angle

Bench Height & Width

No of Bench

Surface RL and Floor RL (Cut offdepth/ Querry bottom

Pit Optimization

Pit Optimization

Pit Optimization

Sectional view

Typical mine plan

Thank you