Feed
The half-core goes into the core feeder.
An integrated core sizer measures the geometry of each piece automatically as it is fed, so density can be calculated for every half-core piece from its measured volume and mass.
The Minpraxis Tester
Unlock More From Every Core
The Minpraxis Tester (MPT) is a patented compression-breakage testing device that generates high-resolution geotechnical, geometallurgical and density data from drill core and lump samples.
Continuous Testing
By testing continuously as samples are processed, the MPT captures changes in strength and hardness that conventional testing can miss, such as those linked to lithology, alteration, veining and defects.
Inside Assay Preparation
It works inside the assay preparation process, on half-core samples, with no additional sample preparation and no cross-contamination between samples.
How It Works
One pass through the machine. The half-core goes into the core feeder, is tested between two rolls, and leaves on a conveyor into a sample bag.
Test
The half-core passes lengthwise between two rolls.
The rolls compress the rock while high-resolution sensors measure the force required to break it.
Measurements are captured continuously along the core, recording changes in strength and hardness as the sample moves through the machine.
Collect
The crushed sample is carried on a conveyor into a sample bag.
It then continues through the conventional assay preparation process.
40,000
sensor readings per second
~1 cm
measurement intervals
200+ m
half-core per 8-hour day
Results
The MPT generates high-resolution geotechnical, geometallurgical and density data that can be delivered alongside existing assay information, giving a more detailed picture of the rock and how its properties change along the core.
Rock type ARock type BRock type C
What It Means for Your Team
Geotechnical Engineering
More detailed rock strength and variability data to inform mine design and stability assessments.
See the data productsGeometallurgy
More detailed hardness and breakage data to inform processing decisions and mill design.
See the data productsGeology
A more complete picture of the deposit, with engineering properties complementing existing geological and assay information.
See the data productsTechnical Library
Tested Against Industry Standards
The Minpraxis Tester has been evaluated through research and testing programs designed to compare MPT results with established geotechnical and geometallurgical testing methods.
