P5
jf_mining_processing_plant::P5
Staff Mineral Processing Engineer

Staff Mineral Processing Engineer

industrial_energy_operationsMining Processing Plant · P5 — P5 — Expert Professional · Individual contributor

Serves as the technical authority for optimizing ore crushing, grinding, and metal extraction processes across the processing plant.

Median pay · United States · annual

$138,423 USD

+123.8% vs P1 on this ladder

Typical range ()

$101,680$188,442

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5 of 8

Track

Individual contributor

51-0000

Coordinates

3 / 4 spaces

pay@2 · 2026-07

What this role is

Serves as the technical authority for optimizing ore crushing, grinding, and metal extraction processes across the processing plant. At the Expert Professional (P5) level, the role owns multiple systems or a technical domain, establishes the approach, and drives org / multi-team outcomes. Leads cross-team technical initiatives.

What this level does

  • Serves as the technical authority within the plant, solving complex material and process-related problems as the top individual-contributor level.
  • Performs advanced metallurgical testing and material characterization and leads failure analysis and root-cause investigations that inform plant-wide strategy.
  • Provides technical expertise, support, coaching and training to Metallurgists, Metallurgy Technicians and Refiners, and manages consultants and stakeholders.
  • Undertakes specific projects to improve production plant performance, acting independently on broad assignments where standard answers do not exist.
  • Acts as a spokesperson on plant metallurgical performance to management and external partners, building influential technical networks.
Knowledge applied
Recognized technical authority on plant metallurgy — advanced testing, material characterization and failure analysis applied to strategic plant issues.
Complexity & problem solving
Works on intangibles and broad special assignments where standard answers do not exist; breaks strategic plant problems into targeted investigation and improvement steps.
Collaboration & interaction
Coaches Metallurgists, Technicians and Refiners; manages consultants and stakeholders; acts as external technical spokesperson.
Typical experience
12+ years with extensive metallurgical and processing expertise; top individual-contributor role.

Skills at this level

Mineral Processing Operations
Operates stationary plant machinery that grinds, crushes, cuts, saws and slices rocks and minerals, and controls washing, leaching, precipitating and filtering equipment to remove waste and recover minerals.
Mineral Separation Techniques
Separates metal and mineral concentrates from ore and alluvial deposits using thickening, flotation, gravity separation, filtration, and magnetic and electrostatic separation, matching the technique to the feed.
Reagent and Solvent Application
Combines mineral ores with solvents and ensures the correct application of chemicals in the extraction of minerals to facilitate downstream processing.
Control-Room Process Monitoring
Monitors and controls processing plant equipment and systems from a central control room across rotating shifts, adjusting controls to maintain optimal process conditions.
Material Flow and Feed Management
Monitors and maintains the flow of unprocessed material from conveyors into machines and oversees loading and unloading of minerals into and out of plant machinery.
Operational Data Recording and Analysis
Logs operational data such as production rates and downtimes and uses this information to identify and implement improvements in plant operations.
Electrical and Mechanical Troubleshooting
Applies electrical and mechanical principles to diagnose and rectify faults during operations, minimizing plant downtime.
Sampling and Metallurgical Testing
Performs sampling and testing methods from visual inspection and jar tests through to advanced metallurgical testing and material characterization of process streams.
Root-Cause and Failure Analysis
Leads investigations into chronic process upsets and equipment underperformance to isolate causes and prevent recurrence in the circuit.
Process Optimization and Cost Reduction
Develops and implements solutions that lift recovery and grade while reducing cost per tonne, from shift-level adjustments to plant-wide strategy.
Safety and Environmental Compliance
Ensures safety protocols are followed, handles and disposes of waste material in line with environmental regulations, and adjusts operations to remain compliant while optimizing efficiency.
Technical Coaching and Stakeholder Management
Provides technical expertise, coaching and training to Metallurgists, Technicians and Refiners, and manages consultants and external stakeholders on plant performance.
Geometallurgy and Flowsheet Design
Integrates ore-body characteristics with equipment selection and circuit configuration to shape multi-year plant processing strategy and superior flowsheet approaches.
Cross-Functional Coordination
Coordinates with geologists, engineers, maintenance and metallurgy teams to align material transport, process changes and production targets.

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As of · 2026-07-30

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