Mining Blasting Course

Lesson 1 • History and Role of Blasting in Mining

Traces blasting from black powder to modern explosives and links historical milestones to current practice. Provides context for why precision blasting drives mine productivity.

Lesson 2 • Classification of Explosives

Categorizes explosives by sensitivity, form, and application. Enables correct product selection for surface and underground mining conditions.

Lesson 3 • Explosive Chemistry and Energy Release

Covers oxidation-fuel reactions, detonation velocity, and heat of explosion. Connects chemical properties to fragmentation outcomes in rock.

Lesson 4 • Industry Terminology and Units

Defines standard blasting terms, measurement units, and abbreviations used throughout the course. Ensures precise communication on site and in technical reports.

Lesson 1 • Rock Mass Characterization

Introduces uniaxial compressive strength, tensile strength, and rock quality designation. Links geotechnical data collection to blast design inputs.

Lesson 2 • Fragmentation Theory

Covers Kuz-Ram and related models that predict fragment size distribution. Applies fragmentation predictions to crusher feed and downstream process efficiency.

Lesson 3 • Stress Wave Propagation in Rock

Explains how compressive and tensile waves travel through rock after detonation. Connects wave behavior to crack initiation and fragmentation mechanisms.

Lesson 4 • Geotechnical Influence on Blast Design

Integrates joint orientation, rock density, and water content into design decisions. Demonstrates how site geology changes powder factor and timing requirements.

Lesson 1 • Explosives Transportation on Site

Details vehicle requirements, load limits, and route planning for on-site explosives movement. Covers emergency response if a transport incident occurs.

Lesson 2 • Explosives Receipt and Inventory

Covers delivery inspection, quantity verification, and documentation at the magazine. Establishes chain-of-custody practices that satisfy regulatory audits.

Lesson 3 • Disposal of Unused Explosives

Presents approved methods for destroying deteriorated or surplus explosives safely. Addresses environmental obligations and documentation for disposal events.

Lesson 4 • Safe Handling Practices

Addresses friction, impact, heat, and electrostatic hazards during manual handling. Reinforces personal protective equipment selection and buddy-system protocols.

Lesson 1 • Electronic Detonator Programming

Explains logging, delay assignment, and firing sequence programming for electronic systems. Demonstrates how programmable timing improves fragmentation and reduces vibration.

Lesson 2 • Detonator Specifications and Testing

Covers delay intervals, firing current requirements, and resistance testing procedures. Ensures detonators meet specification before installation in the blast.

Lesson 3 • Misfires and Initiation Failures

Identifies causes of misfires and prescribes safe waiting times and investigation steps. Establishes the re-entry and recovery procedures required by regulation.

Lesson 4 • Types of Initiation Systems

Compares electric, non-electric, and electronic detonator systems by reliability, timing precision, and hazard profile. Guides system selection for site conditions.

Lesson 1 • Drill Pattern Layout and Hole Inclination

Covers square, staggered, and echelon drill patterns and the effect of hole inclination on fragmentation and wall stability. Connects pattern choice to drilling cost.

Lesson 2 • Timing Design and Sequencing

Applies inter-row and inter-hole delays to control throw direction, vibration, and fragmentation. Demonstrates timing diagrams and their translation into detonator delay selection.

Lesson 3 • Blast Plan Documentation

Produces a complete blast plan including drill logs, loading sheets, and firing diagrams. Establishes the documentation standard required for regulatory approval and post-blast review.

Lesson 4 • Explosive Loading and Powder Factor

Calculates charge weight per hole, deck loading, and overall powder factor for a bench blast. Balances explosive cost against fragmentation and dilution targets.

Lesson 1 • Cut Designs for Development Headings

Covers burn cut, wedge cut, and fan cut configurations for advancing tunnels and drives. Selects cut type based on rock strength and available drill equipment.

Lesson 2 • Underground Blast Geometry Constraints

Explains how confined faces, limited free surfaces, and ventilation restrictions alter design parameters. Contrasts underground geometry with open-pit approaches.

Lesson 3 • Stope Blasting Methods

Addresses long-hole open stoping, sublevel stoping, and bench-and-fill sequences. Links stope geometry to ore recovery and dilution control.

Lesson 4 • Underground Safety Protocols

Establishes exclusion zones, re-entry procedures, and gas monitoring requirements specific to underground blasting. Addresses unique hazards of confined detonation.

Lesson 1 • Vibration Monitoring and Analysis

Covers seismograph placement, trigger settings, and waveform interpretation. Enables blasters to validate compliance and refine site attenuation models.

Lesson 2 • Ground Vibration Fundamentals

Defines peak particle velocity, frequency, and scaled distance as the key vibration metrics. Connects charge weight per delay to vibration amplitude at sensitive receivers.

Lesson 3 • Flyrock Prediction and Prevention

Identifies causes of flyrock including inadequate burden, weak zones, and stemming failure. Establishes exclusion zone calculation and physical barrier requirements.

Lesson 4 • Airblast Generation and Control

Explains overpressure sources including stemming ejection, face movement, and exposed detonating cord. Prescribes stemming and timing controls to reduce airblast.

Lesson 1 • Fragmentation Assessment Methods

Applies sieve analysis, photographic image analysis, and digital scanning to quantify fragment size. Compares measured results against design targets and crusher requirements.

Lesson 2 • Continuous Improvement and Design Iteration

Establishes a structured blast improvement cycle using trial blasts, statistical analysis, and design updates. Integrates feedback from drill-and-blast, processing, and geotechnical teams.

Lesson 3 • Root Cause Analysis of Blast Problems

Applies fishbone and five-why methods to diagnose poor fragmentation, excessive vibration, and misfires. Distinguishes design faults from execution errors and geological surprises.

Lesson 4 • Post-Blast Inspection and Measurement

Establishes safe inspection procedures and measurement techniques for muck pile shape, toe, and overbreak. Provides the data foundation for performance analysis.