| Find
out more |
FAQ
|
Who's buying MaxiPit and NPV
Scheduler? |
|
Codelco, Chile (copper)
De Beers, South
Africa (diamonds)
Placer Dome, Canada
(gold)
Miller Mining, UK
(coal)
Ultrafertil, Brazil
(phosphate)
Normandy-LaSource, France (gold)
MBR, Brazil
(iron ore)
CSN, Brazil (iron ore)
Knight Piesold,
Argentina (borax)
Millennium, Brazil (mineral
sands)
Ashanti Goldfields, Ghana (gold)
Polymetal,
Russia (gold)
Sishen, South Africa (iron ore)
Rio Tinto,
UK (various)
Orapa Mine, Botswana (diamonds)
Amplats,
South Africa (platinum)
Placer Pacific, Australia (gold)
|
Features |
- Choice of input block model formats;
- Windows 95/98/NT™ ease of use;
- In-built pit surface contouring;
- In-built charting and graphics;
- Integrated Windows text editor;
- Integrated Windows spreadsheet;
- Choice of output block model formats;
- Lerchs Grossman method;
- Multiple slope regions and sectors;
- Interactive definition of slope region boundaries and
surfaces;
- Handles multiple rock types;
- Handles multiple processing methods;
- Handles multiple grades and products;
- Underground economic limit option;
- Pit limits controlled by internal and external, depth
limited polygons;
- NPV optimised extraction sequence;
- Nested pit generation.
| |
|
| Overview |
| Earthworks MaxiPit is an
ultimate pit shell and pit sequencing optimiser. The user is
guided through the operation of the program with a flow sheet
style control panel which gives the user clear indication of
the processing path and the options available at each step.
These options include excellent 2D and 3D charting and
contouring tools allowing the user to quickly validate and
present the results of an optimisation. MaxiPit is also
supplied with the Earthworks Data Source Drivers for easy
import and export of block models from Datamine, Vulcan,
Medsystem, Surpac, Micromine and generic text and SQL database
files.
 The ultimate pit optimiser is based on the industry
standard Lerchs-Grossman method and features treatment
of multiple ore types, multiple processing methods and
multiple grades or products. Interactive tools are provided
for creating slope region boundaries and surfaces, and
definition of pit limit polygons. The user can specify a
discount rate and mine production rate to generate a block
extraction sequence which delivers the optimal net present
value to the project. Each block in the output model is
individually numbered to show the theoretically best mining
sequence. In a single optimization run, any number of pit
phases can be generated using a value reduction factor. The
pit phases provide a family of nested pits which indicate the
sensitivity of the ultimate pit to cost-price variations. The
sequence and phase numbers stored in the output model provide
an excellent guide to any first pass manual design of interim
pits.
MaxiPit actually exceeds the
capabilities of pit optimizers that retail for over three
times the price. The results produced by MaxiPit have been
verified by independent consultants and in-house validation
studies. |
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