Geological Applications: Measuring Dry Density in Boreholes for Hard Rock Gold & Copper Mining Geophysical borehole density logging in the hard rock mining sector, gold, copper, is becoming increasingly important in mine planning and ore body knowledge. Geological resources are commonly modelled as volumes which need to be converted to mass using density values. Poor […]
Geological Applications: Environmental Contamination
Geological Applications: Environmental Contamination “Knowledge of your target’s physical properties will aid in the selection of the most applicable geophysical logging method for your drill program.” Environmental contamination investigation and monitoring projects are commonplace today as older industrial sites change their land use. It is important for the regualtors and new landowners to know if […]
Geological Applications: Inter-Borehole Correlation of Target Properties.
Geological Applications: Inter-Borehole Correlation of Target Properties Knowledge of your target’s physical properties will aid in the selection of the most applicable geophysical logging method for your drill program. As the project geologist, your desk studies on the most favourable drill targets have been completed, now you have to drill to increase the value of […]
Logging Operations: Logging System Compatibility
LOGGING SYSTEM COMPATIBILITY OVERVIEW: There are a number of mineral logging system and probe manufacturers worldwide. All manufacturers offer most main stream logging probes and have strengths in different areas. The issues for the logging contractors is compatibility between logging systems which can impact data quality and comparison between systems and further impact upon operational […]
Logging Operations: Logging Probe Stacks
LOGGING PROBE STACKS OVERVIEW: Cost pressures on the mining industry means contractors are always under pressure to come up with innovative solutions to reduce costs. Geophysical logging is a valued service for mining producing accurate and cost effective data for ore body knowledge and mining solutions. Still the multiple logging runs required for a complete […]
Logging Operations: Logging Unit Design
LOGGING UNIT DESIGN OVERVIEW: In the slimhole logging market, there are a wide range of vehicle based logging unit designs aiming to provide an efficient, safe and cost effective service. The design needs to cover a number of factors which can occur during everyday operations and hamper the efficient operations. LOGGING UNIT DESIGN VEHICLE: Due […]
Borehole Imaging: Acoustic Scanner – Overview
BOREHOLE IMAGING: ACOUSTIC SCANNER APPLICATION: The acoustic scanner is an ultrasonic borehole imaging probe which is commonly run in combination with an optical scanner for detailed, high resolution images of the borehole through 360°. Ideal and commonly used for structural studies and geotechnical investigations but has applications in casing inspection and insitu stress analysis. BOREHOLE […]
Borehole Density Measurements – Geophysical Logging
Borehole Density Measurements – Geophysical Logging OVERVIEW: Geophysical borehole density logging is a rapid, cost effective and accurate method to obtain bulk density values for ore modelling. In many mineralisation styles, the density value can be related to the ore grade. Outside of ore grade the bulk density measurements can be used for overburden stripping […]
Formation Density Logging – Coal Blasthole Logging
BLASTHOLE LOGGING IN COAL BLASTHOLE LOGGING IN COAL PROJECT & GOALS: Identification of coal seam parameters (density, top boundary, bottom boundary and partings) within pre-split blastholes prior to blasting. BLASTHOLE LOGGING IN COAL DATA SETS: Gamma, dual spaced density, borehole diameter and magnetic deviation data are acquired, rapidly and cost effectively in blastholes Data in […]
Formation Density Logging – Overview
DENSITY LOGGING DENSITY LOGGING APPLICATION: Measurement of the formation involves a small radioactive source (CS137 or CO60) acting as a gamma radiation source to induce back scattering of gamma radiation in the formation. The back scattered gamma energies are detected at a range of scintillation detectors (typically two but can be three detectors) within a […]
