Principal Mine Planning Engineer

** Description*
* ** We invite you to Explore the Potential of being part of something Clearly Essential!*
* Compass Minerals (NYSE: CMP) is a leading global provider of essential minerals focused on safely delivering where and when it matters to help solve nature's challenges for customers and communities. The company's salt products help keep roadways safe during winter weather and are used in numerous other consumer, industrial, chemical and agricultural applications. Its plant nutrition products help improve the quality and yield of crops while supporting sustainable agriculture.

Compass Minerals operates 11 production and packaging facilities with more than 1,800 employees throughout the U.S., Canada and the U.K. Visit    for more information about the company and its products.

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* Summary:

** The Principal Mine Planning Engineer is the senior technical authority for underground mine planning, responsible for the integrity, optimization, and execution-readiness of short-term, mid‑range, and life‑of‑mine plans.

This role provides strategic and operational leadership for a large underground mining operation, ensuring mine plans are safe, practical, compliant, and aligned with production, safety, and business objectives. The position leads multidisciplinary planning teams, integrates technical disciplines, and serves as the primary interface between strategic planning and day‑to‑day execution.

** Essential Job Functions** :
Included but not limited to the following:

_(Management reserves the right to add or modify the duties and responsibilities at any time.)_

+ Serve as the senior technical authority for underground mine planning, providing independent expert judgment, technical direction, and assurance for short-term, mid-range, and life-of-mine plans.

+ Lead and mentor engineers, surveyors, technicians, interns, and technical contractors in the development and execution of mine plans and planning strategies.

+ Develop, optimize, and technically govern mine plans that integrate geology, geotechnical conditions, ventilation, utilities, equipment capabilities, and operational constraints.

+ Direct and technically govern mine design activities, including development layouts, sequencing, pillar design, and supporting infrastructure.

+ Provide technical oversight of underground utilities and systems-including ventilation, atmospheric monitoring, power, water, compressed air, and communications-to ensure regulatory compliance, safety, and execution feasibility.

+ Convert strategic and long-range mine plans into actionable, clearly sequenced execution plans that operations can reliably implement.

+ Serve as the primary interface between mine planning and execution, ensuring plans are clearly communicated, understood, and executable by operations and frontline leadership.

+ Facilitate technical syndication of mine plans across operations, maintenance, safety, leadership, and other stakeholders to ensure alignment, feasibility, and shared ownership.

+ Facilitate and participate in technical reviews, planning forums, and execution-readiness discussions to proactively identify risks, conflicts, and constraints prior to implementation.

+ Apply advanced analytics, scenario modeling, and trade-off studies to optimize mine design, sequencing, production rates, recovery and capital efficiency.

+ Support ground control inspection, monitoring, and risk mitigation programs in collaboration with geotechnical teams.

+ Support exploration programs, including drilling, seismic activities, and geologic modeling; contribute to mineral resource and reserve estimation and validation.

+ Assess plan performance through reconciliation and variance analysis; integrate lessons learned and operational feedback into continuous plan improvement.

+ Create and sustain high-quality planning deliverables, including schedules, layouts, models, and technical documentation that clearly articulate design intent and assumptions.

+ Guide production scheduling and mine services planning while driving continuous improvement in planning processes.

+ Identify, assess, and escalate planning-driven risks and constraints that may impact safety, production,…