Industrial and Systems Engineering Solutions for Improving Mine Safety: A Socio-Technical and Risk-Based Framework

Author: Masoud Salehpour Bavarsad
Article Type: Conceptual Research Article

Abstract

Mining is a complex, high-risk industrial activity in which workers, equipment, geological conditions, energy systems, contractors and management processes interact continuously. Conventional safety programmes that rely mainly on rules, personal protective equipment and incident investigation are often insufficient because many serious accidents originate from weaknesses in system design, organisational decision-making and the control of high-risk activities. This conceptual article examines how industrial and systems engineering can contribute to the prevention of accidents and the improvement of safety performance in mines.

The article proposes an integrated framework based on risk management, socio-technical systems thinking, critical control management, human factors, reliability engineering, maintenance optimisation, operational research and safety performance measurement. Particular attention is given to the control of mobile equipment, ground instability, ventilation, dust, explosives, electrical systems, fatigue, contractor management and emergency response. The framework also considers the role of digital technologies, including real-time monitoring, predictive maintenance, proximity detection and data-driven decision-making.

The central argument is that mine safety should be designed into the entire production system rather than treated as a separate operational function. Effective safety improvement requires the integration of engineering controls, reliable work processes, competent people, leadership commitment and continuous organisational learning. The proposed approach provides a practical basis for mining companies seeking to reduce unwanted events while improving productivity, resilience and long-term operational sustainability.

Keywords: mine safety; industrial engineering; systems engineering; risk management; critical controls; human factors; reliability engineering; safety performance; mining operations; accident prevention

1. Introduction

Mining is one of the most technically demanding industrial sectors. Underground and surface mines involve large mobile machinery, explosives, electrical installations, high-energy processes, unstable geological formations, dust, noise, heat, vibration, confined spaces and complex transport networks. These hazards are further influenced by changing weather conditions, production pressures, shift work, contractor activities and variations in workforce experience.

Mine accidents are rarely caused by a single unsafe act. In many cases, an incident develops through the interaction of several technical, human and organisational weaknesses. For example, a vehicle collision may involve poor road design, inadequate visibility, ineffective traffic rules, insufficient equipment maintenance, operator fatigue and weak supervision. Similarly, a ground-control failure may be associated with incomplete geological information, inappropriate mine design, inadequate monitoring and delayed decision-making.

Industrial and systems engineering provides a suitable basis for addressing these interconnected problems. Industrial engineering focuses on the design and improvement of processes, resources, work methods and performance systems. Systems engineering examines the relationships between people, technology, procedures, information and the operating environment. When these disciplines are applied to mining, safety becomes an integral part of production-system design.

The purpose of this article is to develop a conceptual framework for applying industrial and systems engineering solutions to mine safety. The article does not present primary field data. Instead, it synthesises established principles from occupational health and safety management, risk engineering, reliability engineering, human factors and organisational learning.

2. Theoretical Foundations

2.1 Mine safety as a socio-technical system

A mine is a socio-technical system consisting of interacting technical and social elements. The main elements include:

• geological and environmental conditions;
• mine design and production methods;
• machinery, vehicles and fixed equipment;
• energy, electrical and ventilation systems;
• workers, supervisors, engineers and managers;
• operating procedures and maintenance practices;
• contractors and suppliers;
• communication and information systems;
• emergency arrangements and external services.

A weakness in one element can create pressure on other elements. For instance, a production delay may encourage work teams to bypass a control, while poor maintenance may increase the likelihood that an operator will be exposed to an uncontrolled hazard. Therefore, safety management should examine how the whole system behaves rather than focusing only on individual behaviour.

2.2 Risk-based safety management

Risk management involves the systematic identification of hazards, analysis of potential consequences, evaluation of risk and selection of suitable controls. In mining, risk assessment should be applied at several levels:

1. Strategic level: mine layout, production method, investment decisions and organisational structure.
2. Project level: construction, expansion, equipment selection and infrastructure changes.
3. Operational level: daily work activities, shift planning and task execution.
4. Individual task level: job safety analysis, permits and pre-start checks.
5. Dynamic level: changing ground, weather, equipment or workforce conditions.

Risk assessment should not be considered a one-time exercise. It must be reviewed whenever there is a significant change in mine design, equipment, production rate, workforce, contractor or environmental condition.

2.3 Safety-I and Safety-II perspectives

The traditional Safety-I perspective aims to prevent accidents by identifying failures and correcting non-compliance. This remains essential, but it should be complemented by a Safety-II perspective, which examines why work is normally completed successfully despite variability and pressure.

A mature mine safety system therefore asks two questions:

• Why did the incident occur?
• Why does safe work normally succeed under changing conditions?

This broader perspective supports learning from successful operations, near misses, weak signals and effective recovery actions.

3. An Integrated Industrial and Systems Engineering Framework

The proposed framework contains eight connected dimensions:

1. risk governance and leadership;
2. critical control management;
3. safe process and mine design;
4. human factors and ergonomics;
5. reliability and maintenance engineering;
6. operational control and digital monitoring;
7. emergency preparedness and resilience;
8. performance measurement and organisational learning.

These dimensions should not be implemented as isolated projects. Their effectiveness depends on integration across the mine’s operating model.

4. Industrial and Systems Engineering Solutions

4.1 Risk governance and safety leadership

Safety performance begins with the way the organisation makes decisions. Senior managers should define clear safety objectives, allocate appropriate resources and ensure that production targets do not encourage the removal of essential controls.

A robust governance system should include:

• a formal mine safety policy;
• clearly defined responsibilities and authorities;
• a risk-acceptance framework;
• documented escalation arrangements;
• independent verification of critical controls;
• regular review of high-potential events;
• worker participation in hazard identification;
• management-of-change procedures.

Safety leadership should be demonstrated through decisions and actions, not only through written policies. For example, a supervisor who stops production because of an uncontrolled ground hazard sends a stronger safety message than a general statement about zero harm.

Industrial engineers can support management by analysing work systems, identifying conflicting objectives and developing balanced performance measures. If managers are assessed only on production volume and cost, unsafe trade-offs may become more likely. A balanced scorecard should include safety, reliability, quality, productivity, environmental performance and workforce development.

4.2 Critical control management

Not all controls have the same importance. A critical control is a control that is essential to preventing a fatal or catastrophic event or to reducing its consequences. Examples include:

• ground-support systems;
• ventilation and methane monitoring;
• isolation of electrical and mechanical energy;
• collision-avoidance systems;
• explosives storage and firing controls;
• berms and edge protection;
• emergency communication systems;
• fire detection and suppression systems.

Critical control management should include five stages:

1. identify the unwanted event;
2. define the potential consequences;
3. identify the controls required to prevent or mitigate the event;
4. specify the performance standard for each control;
5. verify regularly that the control is present and effective.

For example, a vehicle separation system should not be recorded simply as “installed”. Its performance standard may include sensor availability, alarm functionality, maintenance frequency, operator response and testing requirements.

This approach moves safety management from the measurement of paperwork completion towards the verification of actual risk control.

4.3 Safe mine and process design

The most effective safety controls are often incorporated during the design stage. Once a mine layout, haul road, plant arrangement or equipment fleet has been established, correcting design weaknesses can be expensive and disruptive.

Design-stage safety reviews should examine:

• separation of people and vehicles;
• visibility at intersections and loading areas;
• emergency access and escape routes;
• equipment maintainability;
• drainage and water-control arrangements;
• ground-support requirements;
• ventilation capacity and redundancy;
• fire resistance and fire detection;
• access to elevated work areas;
• manual-handling demands;
• noise, dust and vibration exposure.

The hierarchy of controls should guide design decisions. Elimination and substitution should be considered before engineering controls, administrative procedures and personal protective equipment. For example, redesigning a process to remove a worker from an exposed area is generally more reliable than relying solely on training and warnings.

4.4 Mobile equipment and traffic management

Vehicle interaction is a major concern in both surface and underground mining. Industrial engineering can improve traffic safety by treating the mine as a transport system.

A traffic-management programme should consider:

• one-way and two-way traffic arrangements;
• vehicle-pedestrian separation;
• road width, gradient and visibility;
• speed limits based on actual operating conditions;
• lighting and signage;
• parking and reversing arrangements;
• communication protocols;
• fatigue and shift patterns;
• vehicle selection and blind-spot reduction;
• emergency stopping areas;
• maintenance of roads and drainage.

Methods such as value-stream mapping and discrete-event simulation can be used to understand traffic flows and identify congestion or conflict points. Where practical, the mine should minimise reversing, reduce unnecessary vehicle movements and use physical barriers rather than relying exclusively on driver awareness.

Proximity detection, cameras, radar and real-time location systems can support risk control. However, technology should be treated as part of a wider system. Its reliability, alarm design, maintenance, operator response and failure modes must be assessed before implementation.

4.5 Ground-control engineering

Ground instability can result in rock falls, collapses, falls of ground and entrapment. Effective ground control requires the integration of geological information, mine design, monitoring, support systems and operational discipline.

Important measures include:

• systematic geological mapping;
• geotechnical classification;
• appropriate excavation design;
• ground-support standards;
• installation quality assurance;
• monitoring of convergence and movement;
• exclusion zones;
• inspection after blasting or geological change;
• communication of changing ground conditions;
• formal withdrawal criteria.

From a systems perspective, a ground-control plan should define not only what support is required but also who has authority to stop work, how changes are communicated and how monitoring data are converted into operational decisions.

4.6 Ventilation, dust and occupational health

Ventilation systems should be designed, monitored and maintained as safety-critical infrastructure. In underground mines, ventilation performance may be affected by mine development, auxiliary fans, doors, stoppings, leakage, equipment emissions and changes in production.

An effective ventilation-management system should include:

• airflow planning and modelling;
• methane and contaminant monitoring;
• inspection of ventilation controls;
• alarm and shutdown arrangements;
• maintenance of fans and monitoring instruments;
• dust suppression at sources;
• exposure assessment;
• respiratory protection where necessary;
• worker health surveillance.

The same systems approach applies to noise, heat, vibration and chemical exposure. The objective should be to reduce exposure at source through engineering controls before relying on individual protective equipment.

4.7 Reliability engineering and maintenance optimisation

Equipment failure can cause direct injuries, fires, uncontrolled energy release, production disruption and emergency situations. Maintenance should therefore be designed around safety and reliability rather than solely around equipment availability.

Useful techniques include:

• reliability-centred maintenance;
• failure modes and effects analysis;
• fault-tree analysis;
• preventive and predictive maintenance;
• condition monitoring;
• spare-parts criticality analysis;
• lubrication management;
• inspection planning;
• statutory examination;
• post-maintenance testing.

A maintenance strategy should distinguish between ordinary equipment and safety-critical equipment. For safety-critical assets, the organisation should define functional requirements, failure consequences, inspection intervals, test procedures and acceptance criteria.

Maintenance backlogs should be risk-ranked. A growing backlog of safety-critical work should trigger formal escalation, even when production equipment remains operational.

4.8 Human factors, ergonomics and fatigue management

Human performance is influenced by the design of tasks, equipment, information and work schedules. Safety programmes that blame workers without examining system conditions are unlikely to produce sustainable improvement.

Human-factors engineering should address:

• control-panel and alarm design;
• visibility and lighting;
• physical access and posture;
• manual-handling requirements;
• communication quality;
• workload and staffing;
• competence and supervision;
• fatigue and sleep opportunity;
• language and literacy differences;
• emergency decision-making.

Fatigue risk management should include roster design, adequate rest periods, travel arrangements, workload assessment and monitoring of extended shifts. Training should be practical and task-specific. Competence should be demonstrated through observation, simulation or assessment rather than attendance alone.

4.9 Management of contractors and interfaces

Contractors may be exposed to unfamiliar geological, technical and organisational conditions. They may also work at the boundaries between different systems, where responsibilities are unclear.

A contractor-management process should include:

1. prequalification based on competence and safety capability;
2. clear allocation of responsibilities;
3. site-specific induction;
4. task and interface risk assessment;
5. verification of equipment and qualifications;
6. supervision proportionate to risk;
7. participation in emergency exercises;
8. performance review based on leading and lagging indicators.

The principal mining organisation should retain responsibility for coordinating risks that arise from interactions between contractors, employees, equipment and production activities.

4.10 Digital technologies and data-driven safety

Digital systems can improve visibility of risk, but they should not be adopted merely because they are technically attractive. Each technology should be linked to a defined hazard and a measurable control objective.

Potential applications include:

• real-time location and personnel tracking;
• equipment-health monitoring;
• predictive maintenance;
• digital permits to work;
• electronic inspections;
• wearable exposure monitoring;
• automated gas and dust detection;
• geotechnical monitoring;
• remote operation;
• digital emergency communication.

Data quality is fundamental. The organisation should define who collects data, how it is validated, who receives alerts and what actions are required. Excessive alarms can create alert fatigue and reduce the effectiveness of the system.

Artificial intelligence and analytics may support the identification of patterns in incidents, equipment failures and unsafe conditions. Nevertheless, automated predictions should support professional judgement rather than replace competent engineering and operational decisions.

5. Emergency Preparedness and Organisational Resilience

Mining emergencies may involve fire, explosion, inundation, ground collapse, toxic gas release, vehicle collision or loss of ventilation. Emergency planning should be based on credible scenarios rather than generic documents.

An effective emergency-management system should include:

• scenario-based risk assessment;
• clearly defined command structures;
• reliable communication;
• escape and refuge arrangements;
• trained rescue teams;
• first-aid and medical response;
• equipment and resource inventories;
• agreements with external emergency services;
• regular exercises;
• post-exercise learning.

Exercises should test decision-making, communication and coordination under pressure. They should also include realistic complications, such as blocked routes, missing personnel, equipment failure or loss of communication.

Organisational resilience means that the mine can continue to control risk during abnormal conditions. This requires redundancy in critical systems, competent personnel, contingency plans and the ability to adapt without bypassing essential controls.

6. Safety Performance Measurement

Traditional lagging indicators, such as lost-time injuries and total recordable injury frequency rates, are useful but insufficient. Serious incidents may be rare, and a low injury rate does not necessarily demonstrate that catastrophic hazards are controlled.

A balanced measurement system should include leading indicators such as:

• percentage of critical controls verified;
• overdue safety-critical maintenance;
• quality of workplace inspections;
• completion and effectiveness of corrective actions;
• reported near misses and weak signals;
• emergency-exercise performance;
• competence-assessment results;
• exposure-monitoring results;
• safety observations followed by action;
• management-of-change compliance.

Indicators should be reviewed for quality rather than quantity. A large number of completed inspections may have little value if inspections do not identify meaningful hazards or result in effective corrective action.

7. Implementation Roadmap

A practical implementation programme may be divided into three phases.

Phase 1: Establish the baseline

The mine should first identify major hazards, current controls, critical assets, high-risk tasks, regulatory gaps and organisational weaknesses. Worker consultation is essential because frontline personnel often possess detailed knowledge of operational variability.

Phase 2: Strengthen critical controls

The organisation should define performance standards for critical controls, assign ownership, establish verification processes and correct deficiencies. High-potential events and serious near misses should receive priority.

Phase 3: Integrate and improve

In the longer term, safety should be integrated with production planning, maintenance, procurement, mine design, contractor management and digital systems. Continuous improvement should be supported by audits, learning teams, data analysis and periodic review of risk assumptions.

A staged approach helps prevent safety initiatives from becoming disconnected projects. Each improvement should have a responsible owner, a measurable outcome, a timetable and a method for verifying effectiveness.

8. Discussion

The proposed framework demonstrates that mine safety is not solely a matter of worker behaviour or regulatory compliance. It is a design and management problem involving technical systems, organisational structures, human capabilities and operational conditions.

Industrial engineering contributes methods for analysing processes, improving workflows, balancing resources and reducing unnecessary variation. Systems engineering contributes methods for understanding interfaces, dependencies, failure pathways and lifecycle risks. Together, these disciplines can help mining organisations move from reactive safety management towards proactive risk control.

However, several barriers may limit implementation. These include production pressure, fragmented responsibilities, insufficient technical capability, poor data quality, resistance to change and over-reliance on technology. Another risk is the creation of excessive procedures that are difficult to use in real work. Safety systems should therefore be designed with workers, tested in practice and reviewed for usability.

The most important principle is that safety controls must be reliable under normal, abnormal and emergency conditions. A procedure that works only when production is stable, supervision is available and equipment is functioning perfectly is not a sufficiently robust control.

9. Conclusion

Industrial and systems engineering can make a significant contribution to improving mine safety by integrating risk management, mine design, reliability engineering, human factors, operational research, digital monitoring and organisational learning.

The key recommendations are as follows:

1. Treat mine safety as a socio-technical system rather than a collection of isolated rules.
2. Identify and verify controls that prevent fatal and catastrophic events.
3. Design safety into mine layouts, equipment, processes and maintenance strategies.
4. Use engineering controls to reduce exposure before relying on administrative controls or personal protective equipment.
5. Apply reliability-centred maintenance to safety-critical equipment.
6. Include human factors, ergonomics and fatigue management in operational design.
7. Manage contractors and organisational interfaces as part of the mine’s safety system.
8. Use digital technologies only when they address a clearly defined hazard or control requirement.
9. Measure the effectiveness of controls through leading and lagging indicators.
10. Develop a learning culture in which incidents, near misses and successful adaptations are analysed constructively.

Ultimately, sustainable mine safety depends on the alignment of engineering quality, management commitment, workforce competence and operational discipline. When safety is designed into the production system, the mine can improve both risk control and operational performance.

Declarations

Conflict of interest

The author declares no conflict of interest.

Funding

No external funding was received for the preparation of this conceptual article.

Data availability

This article is conceptual and does not contain primary research data.

References

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Suggested citation:
Salehpour Bavarsad, M. (2026) ‘Industrial and systems engineering solutions for improving mine safety: a socio-technical and risk-based framework’, conceptual research article.