Mine Supervisor

The Mine Supervisor is responsible for executing short- and long-term mine plans to support safe, efficient, and cost-effective sand production. This role partners closely with plant operations, mine planning, geology, logistics, and commercial teams to ensure alignment between mine output and customer demand.

In addition to planning responsibilities, this role oversees contractor-supported work, including large-scale projects and site development activities, ensuring alignment with operational priorities, safety standards, and timelines.

Mine Operations & Production Execution

• →Lead daily pit operations to ensure safe, efficient, and reliable sand production to support wet plant demand
• →Direct mining activities based on production priorities, material quality, and plant feed requirements
• →Coordinate pit sequencing, haul routes, and mining areas to maximize productivity and minimize downtime
• →Coordinate with Mine planners to execute and maintain short-term (weekly/monthly) and long-term (quarterly/annual) mine plans to meet production targets and reserve strategies
• →Monitor production versus targets and make real-time adjustments to maintain output goals
• →Maintain safe pit conditions, haul roads, and access areas

Quality Control & Material Management

• →Take raw material samples in the pit and evaluate sand quality prior to processing
• →Identify clay seams, high organics, and high turbidity material zones
• →Communicate acceptable mining areas to mine planners and restrict unsuitable material from reaching the wet plant
• →Partner with plant leadership to maintain consistent feed quality, blending, and throughput performance

Contractor Management

• →Serve as the primary on-site liaison for contractor-supported work
• →Direct contractor activities to align with production priorities and site schedules
• →Oversee construction, and mine development projects
• →Monitor contractor productivity, quality of work, safety performance, and schedule adherence
• →Coordinate daily and weekly planning meetings between internal teams and contractors

Safety & Compliance

• →Champion a safety-first culture across all mine and contractor activities
• →Ensure compliance with MSHA regulations and company safety standards
• →Participate in risk assessments, job hazard analyses, and pre-task planning
• →Hold contractors and employees accountable to site safety expectations

Cross-Functional Collaboration

• →Work closely with plant operations to ensure consistent raw feed supply
• →Coordinate with contractors  regarding equipment readiness and availability
• →Partner with geology and operations leadership on pit development and resource utilization
• →Support logistics and commercial teams to align production with customer demand and shipping schedules
• →Drive continuous improvement initiatives across mine operations

• 5+ years of experience in mining, aggregates, sand operations, excavation, or heavy industrial environments
• Previous supervisory experience leading crews, contractors, or field operations
• Experience managing contractor-supported projects in an industrial or mining environment
• Strong understanding of production targets, equipment utilization, and cost control
• Ability to work outdoors in an active mining environment
• Strong communication, leadership, and decision-making skills

Preferred

• Experience in sand mining or proppant operations
• Experience working with Turner Construction or similar large contractors
• Familiarity with wet plant operations and raw material quality requirements
• Experience supporting capital projects or site development
• Experience with ArcGIS, AutoCAD, MinePlan 3D, or other surveying/modeling/mapping software
• Knowledge of MSHA regulations

Leadership & Competencies

• Strong operational mindset with the ability to translate priorities into field execution
• Ability to lead contractors and internal teams without direct authority
• High attention to detail with strong problem-solving skills
• Clear communicator who can align multiple stakeholders quickly
• Bias for action with the ability to adjust priorities in a dynamic environment
• Hands-on leader willing to be present in the pit and actively support operations

Travel Requirements

• Travel to Austin as applicable for software training and overlap with the geo team, once per quarter or less unless necessary for training

• Travel as needed to other sites (Monahans, OnCore) to support mining operations

Physical requirements

• Capable of lifting 50 lbs
• Hand dexterity and fine motor skills required to grasp and carry
• Reach with hands and arms
• Talk and hear
• Stand, walk, stoop, kneel, crouch or crawl, sit, climb, and balance on unstable surfaces
• See near and far, color vision, peripheral vision, depth perception, and ability to adjust focus
• Tolerate extreme temperatures/harsh climates