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Customers: mine geology and resource estimation consultants, technical services (site and corporate), mine geology departments, project and feasibility groups.
Capabilities:
- Experimental Variography - dealing with outliers, treatment of clustering issues, and determination of directions of continuity;
- Modelling Variograms - choice of models; determination of nugget effect;
- Multivariate Variogram Modelling - calculating and modelling cross-variograms.
- Implication and use of the properties of cokriging;
- Non-Stationary Modelling;
- Support Effect - deriving global distribution of block grades. Estimation of global recoverable resources, incorporation of information effect. Expansion to Multivariate settings;
- Optimisation of drill spacing through global estimation variance analysis;
- Dispersion variance analysis and primary characterisation of blending / stockpiling requirements;
- Quantitative kriging neighbourhood analysis;
- Cross-Validation of variogram models;
- Kriging - simple, ordinary, universal, IRF-k. Production of estimates;
- Local estimation of recoverable resources. Multiple indicator kriging techniques, service variables, gaussian disjunctive kriging, uniform conditioning and other non-linear estimates;
- Building Confidence Intervals;
- Conditional Simulations - simulation of grades and characterisation of uncertainties: utilisation in building Confidence Intervals, optimisation of blending and stockpiling requirements, conceptualisation of technical constraints in underground situation, risk assessment;
- Simulation of geology and uncertainty on categorical variables (e.g. lithology);
- Simulation of Geotechnical Variables (e.g. Fracture Densities).
Audit / Review of Resources / Reserves
Customers: mine geology and resource estimation consultants, technical services (site and corporate), mine site geology departments, project and feasibility groups.
Expertise: state-of-the-art knowledge of mining geostatistical techniques and mining processes, strong theoretical training backed up by 75 years combined professional experience. Ability to help companies with scoping out human resources needs/training requirements/technical propositions to achieve specific objectives of their resource estimation projects.
Capabilities: Access to world class experts (e.g. Henri Sanguinetti) to collaborate with Tenzing to conduct a specific and comprehensive Audit of Resources or Reserve Estimation for a range of commodities. |
