MiningDoc launches MRMM methodology

Published May 27, 2026 by The Daily Scout

- MiningDoc on May 26 published a post outlining its Mining Rock Mass Model methodology for open-pit slope assessments and linked a downloadable paper. - The paper says the MRMM workflow was refined across more than 40 mining projects, from greenfields studies to mature producing mines. - The downloadable case study and paper are available through MiningDoc’s site, which links the methodology to open-pit applications.

Why it matters

MiningDoc’s May 26 post points readers to a longer technical argument the company has been making for several years: open-pit slope design improves when geotechnical data is turned into a three-dimensional rock-mass model instead of being left in logs, sections and isolated datasets. The linked paper describes a Mining Rock Mass Model, or MRMM, as a way to collect, validate and spatially interrogate geotechnical information for pit-slope design and mine planning. The document says the workflow has been refined through use on more than 40 mining projects, from greenfields studies to mature operations. ### What exactly did MiningDoc publish? MiningDoc’s website hosts a case-study entry titled “How a mining rock mass model can improve slope stability assessment?” that links to a downloadable PDF paper on the MRMM methodology. The entry says the paper presents case studies showing how the model can be integrated into open-pit applications and the mine-planning process. (miningdoc.tech) The PDF is titled “Mining Rock Mass Models: A Methodology for Collecting, Processing and Presenting Geotechnical Data in Three Dimensions.” The authors are listed as C.R.W. Seymour, G.D. Dempers and P.A. Jenkins of Dempers & Seymour Pty Ltd, Australia. ### What problem is the MRMM trying to solve? The paper says large volumes of geotechnical data are commonly collected during the life of an open-pit project but are “rarely ever effectively applied” to represent rock-mass conditions across the project. (miningdoc.tech) It says the MRMM concept was developed to improve appreciation of rock-mass conditions and three-dimensional variability across a site, with the aim of improving use of available geotechnical data. (miningdoc.tech) Dempers & Seymour describes the MRMM on its website as a “dynamic tool” that incorporates geotechnical and structural parameters into mine design and planning. The firm says the approach is intended to enable a more precise appreciation of rock-mass conditions and their variability. ### How does the methodology work in practice? The paper says the MRMM represents logged values and calculated geotechnical parameters for major rock-classification systems in three-dimensional block models. (miningdoc.tech) Those models are constrained by available geological and structural data and are described as analogous to a resource block model that can be viewed and incorporated into planning. (dempersseymour.com.au) The methodology starts with data collection, principally from geotechnical logging of drill core, though field mapping and structural logging can also be incorporated, the paper says. Data validation is treated as a separate step because consistency of interpretation between personnel must be checked, and the paper says poor input data can produce unreliable model output. (miningdoc.tech) ### Why does that matter for slope stability decisions? The paper says three-dimensional modelling helps identify variability within and across lithological, geological and structural units, allowing geotechnical domains to be identified more readily than with traditional data display methods. In practice, that means the model is meant to support decisions from bench scale to broader pit design by locating where rock-mass conditions change materially across an excavation. (miningdoc.tech) Dempers & Seymour says related applications of its three-dimensional rock-mass modelling include rock-bridge slope stability work, where calibrated MRMM data can provide a wider range of strength parameters for probabilistic analyses. The firm says that can allow a more realistic representation of pit slopes and more appropriate factors of safety and probabilities of failure. (miningdoc.tech) ### How should readers read the “40 projects” claim? The “over forty mining projects” figure comes from the downloadable paper hosted on MiningDoc’s site, not from an independent registry or a newly released peer-reviewed update. The paper presents that number as the basis on which the modelling techniques were refined, and the MiningDoc case-study page repeats the same claim in summarizing the methodology. (dempersseymour.com.au) ### What is new in the current post? MiningDoc’s current post appears to function mainly as a fresh distribution point for an existing methodology and downloadable case-study material rather than as the release of a newly dated technical standard. The practical significance is that the company is recirculating a workflow that combines structural data, geomechanical parameters and three-dimensional modelling for open-pit slope assessment at a time when miners are looking for earlier hazard identification and more defensible design-stage decisions. (miningdoc.tech) That final point is an inference from the paper’s stated purpose and the company’s description of the tool, rather than a new claim separately quantified in the post.

Key numbers

MiningDoc on May 26 published a post outlining its Mining Rock Mass Model methodology for open-pit slope assessments and linked a downloadable paper.
The paper says the MRMM workflow was refined across more than 40 mining projects, from greenfields studies to mature producing mines.
The document says the workflow has been refined through use on more than 40 mining projects, from greenfields studies to mature operations.
(miningdoc.tech) How should readers read the “40 projects” claim?

What happens next

(miningdoc.tech) It says the MRMM concept was developed to improve appreciation of rock-mass conditions and three-dimensional variability across a site, with the aim of improving use of available geotechnical data.
- MiningDoc on May 26 published a post outlining its Mining Rock Mass Model methodology for open-pit slope assessments and linked a downloadable paper.

Sources

Quick answers

What happened in MiningDoc launches MRMM methodology?

MiningDoc on May 26 published a post outlining its Mining Rock Mass Model methodology for open-pit slope assessments and linked a downloadable paper. The paper says the MRMM workflow was refined across more than 40 mining projects, from greenfields studies to mature producing mines. The downloadable case study and paper are available through MiningDoc’s site, which links the methodology to open-pit applications.

Why does MiningDoc launches MRMM methodology matter?

MiningDoc’s May 26 post points readers to a longer technical argument the company has been making for several years: open-pit slope design improves when geotechnical data is turned into a three-dimensional rock-mass model instead of being left in logs, sections and isolated datasets. The linked paper describes a Mining Rock Mass Model, or MRMM, as a way to collect, validate and spatially interrogate geotechnical information for pit-slope design and mine planning. The document says the workflow has been refined through use on more than 40 mining projects, from greenfields studies to mature operations. What exactly did MiningDoc publish? MiningDoc’s website hosts a case-study entry titled “How a mining rock mass model can improve slope stability assessment?” that links to a downloadable PDF paper on the MRMM methodology. The entry says the paper presents case studies showing how the model can be integrated into open-pit applications and the mine-planning process. (miningdoc.tech) The PDF is titled “Mining Rock Mass Models: A Methodology for Collecting, Processing and Presenting Geotechnical Data in Three Dimensions.” The authors are listed as C.R.W. Seymour, G.D. Dempers and P.A. Jenkins of Dempers & Seymour Pty Ltd, Australia. What problem is the MRMM trying to solve? The paper says large volumes of geotechnical data are commonly collected during the life of an open-pit project but are “rarely ever effectively applied” to represent rock-mass conditions across the project. (miningdoc.tech) It says the MRMM concept was developed to improve appreciation of rock-mass conditions and three-dimensional variability across a site, with the aim of improving use of available geotechnical data. (miningdoc.tech) Dempers & Seymour describes the MRMM on its website as a “dynamic tool” that incorporates geotechnical and structural parameters into mine design and planning. The firm says the approach is intended to enable a more precise appreciation of rock-mass conditions and their variability. How does the methodology work in practice? The paper says the MRMM represents logged values and calculated geotechnical parameters for major rock-classification systems in three-dimensional block models. (miningdoc.tech) Those models are constrained by available geological and structural data and are described as analogous to a resource block model that can be viewed and incorporated into planning. (dempersseymour.com.au) The methodology starts with data collection, principally from geotechnical logging of drill core, though field mapping and structural logging can also be incorporated, the paper says. Data validation is treated as a separate step because consistency of interpretation between personnel must be checked, and the paper says poor input data can produce unreliable model output. (miningdoc.tech) Why does that matter for slope stability decisions? The paper says three-dimensional modelling helps identify variability within and across lithological, geological and structural units, allowing geotechnical domains to be identified more readily than with traditional data display methods. In practice, that means the model is meant to support decisions from bench scale to broader pit design by locating where rock-mass conditions change materially across an excavation. (miningdoc.tech) Dempers & Seymour says related applications of its three-dimensional rock-mass modelling include rock-bridge slope stability work, where calibrated MRMM data can provide a wider range of strength parameters for probabilistic analyses. The firm says that can allow a more realistic representation of pit slopes and more appropriate factors of safety and probabilities of failure. (miningdoc.tech) How should readers read the “40 projects” claim? The “over forty mining projects” figure comes from the downloadable paper hosted on MiningDoc’s site, not from an independent registry or a newly released peer-reviewed update. The paper presents that number as the basis on which the modelling techniques were refined, and the MiningDoc case-study page repeats the same claim in summarizing the methodology. (dempersseymour.com.au) What is new in the current post? MiningDoc’s current post appears to function mainly as a fresh distribution point for an existing methodology and downloadable case-study material rather than as the release of a newly dated technical standard. The practical significance is that the company is recirculating a workflow that combines structural data, geomechanical parameters and three-dimensional modelling for open-pit slope assessment at a time when miners are looking for earlier hazard identification and more defensible design-stage decisions. (miningdoc.tech) That final point is an inference from the paper’s stated purpose and the company’s description of the tool, rather than a new claim separately quantified in the post.