Operations Assistant

US Aggregates, LLC; Cloverdale (CA); On-site; USD 90,000 - 125,000; Full time

Job summary

US Aggregates, LLC is seeking a seasoned supervisor to lead daily plant operations across multiple sites in California. You will oversee crushing, screening, washing, equipment operations, and material handling to meet production forecasts while upholding safety and regulatory standards.

The role supports maintenance planning, quality control coordination, and blasting planning, and provides coaching to plant staff.

Qualifications

• 3+ years of supervisory or lead experience within the aggregate industry required.
• Exposure to preventive maintenance, aggregate processing, quality control, and drilling and blasting preferred.
• Strong verbal and written communication skills.
• Ability to lead across multiple plant sites.

Responsibilities

• Promotes safety and environmental compliance with MSHA rules.
• Assists Plant Managers in planning, scheduling, and directing daily operations.
• Monitors preventive maintenance and ensures proper replacement parts to minimize downtime.
• Supports quality control coordination and addresses product quality issues.
• Develops working knowledge of drilling and blasting operations and planning.
• Provides coaching and mentorship to plant staff and coordinates with HR on training.
• Tracks KPIs such as tons per operating hour, uptime, delays, and production data for budgeting targets.
• Fills in for Plant Managers and other leadership as needed across sites.
• Participates in monthly production and planning meetings and communicates goals with Area Managers.

Skills

Communication

Team collaboration

Goal setting

Safety compliance

Mechanical knowledge

Organization

Problem-solving

Welding experience

Education

High School Diploma or equivalent

Bachelor's Degree preferred

Tools

MS Office Suite

Excel

Outlook

Job description

Essential Functions

• Promotes and supports Safety & Environmental compliance with all State, Federal, Company, and MSHA rules and regulations, participating in weekly safety meetings, workplace examinations, and incident reviews, and model safe job planning and procedures
• Assisting Plant Managers in planning, scheduling, and directing daily operations, including crushing, screening, washing, equipment operations, and material handling processes, to maintain production and aggregate processing efficiency and meet established sales forecasts
• Assists in scheduling and monitoring preventive maintenance programs for fixed and mobile equipment, reviewing daily equipment inspection reports, and ensuring proper replacement and repair parts are on hand to minimize downtime and maximize production
• Supports quality control activities in coordination with the Quality Manager, including sampling and testing of aggregate products to ensure compliance with customer and regulatory specifications, and assisting with identifying and resolving product quality issues
• Develops working knowledge of drilling and blasting operations, including shot planning, coordination with blasting contractors, safety and regulatory requirements, and the cost impact on downstream production
• Provides coaching, mentoring, and direction to plant employees, partnering with Plant Managers and the HR Business Partners on training, staffing, and personnel matters, including steps in the progressive discipline policy
• Assist the Plant manager with tracking and reporting key performance indicators such as tons per operating hour, uptime, delays, fuel and electrical consumption, and drilling and blasting cost, as well as maintaining production and inventory data and supporting budget targets
• Uses plant production data to identify opportunities to improve efficiency, reduce cost, and optimize overall plant performance
• Fills in for Plant Managers, Assistant Plant Managers, and other plant positions as needed to support coverage across assigned territory
• Participates in monthly production and planning meetings and communicates openly with Area Managers and senior leadership on plant goals, progress, and development
• Additional duties and responsibilities as assigned, including but not limited to continuously growing in alignment with the Company’s core values, competencies, and skills

Education Qualifications

• High School Diploma or equivalent required
• Bachelor's Degree preferred, or an equivalent combination of training and work experience

Experience Qualifications

• 3+ years of supervisory or lead experience within the aggregate industry required
• Exposure to preventive maintenance, aggregate processing, quality control, and drilling and blasting preferred

Skills and Abilities

• Strong verbal and written communication skills, with the ability to present technical and operational information clearly to employees, peers, and management in both formal and informal settings
• Demonstrated ability to build effective working relationships and collaborate across multiple plant sites with diverse teams, plant managers, and functional partners
• Demonstrated ability to set goals, stay self-motivated, and maintain a consistent commitment to professional growth, continuous learning, and career advancement within aggregate operations
• Working knowledge of MSHA and environmental rules and regulations applicable to aggregate operations, with awareness of site hazards and a commitment to safety and compliance
• Working knowledge of mechanical components, plant equipment, and procedures applicable to aggregate production and maintenance environments
• Strong skill in organization, planning, time management, and problem-solving, with the ability to manage competing priorities effectively
• Proficiency in Microsoft Office Suite, including Outlook and Excel, and other software tools relevant to plant operations, reporting, and performance tracking
• Ability to work effectively in a fast-paced, deadline-driven environment, adapting quickly to shifting priorities and evolving operational needs
• Skilled in welding, torching, and maintenance processes preferred

Licenses and Certifications

• Valid driver's license and a clean driving record required
• Current MSHA Part 46 training preferred

Working Conditions/Physical Demands

• Ability to lift, push, pull, or carry at least 50 pounds
• Ability to continuously stand or walk on level or uneven ground for extended periods
• Ability to ascend and descend ladders, stairways, and incline catwalks and work safely at elevated heights as required
• Ability to bend, crouch, and/or kneel at the waist or knees
• Ability to safely operate a motor vehicle, including pickup trucks, within plant sites, on public roads, and between multiple locations daily
• Work is performed in both office and outdoor environments, including quarries and plants, around moving machinery, at various heights, and in varying weather conditions
• Must wear all required personal protective equipment (PPE) and comply with all site safety standards at all times
• Position requires regular travel among 4 to 6 sites within the assigned territory, with flexibility to work long hours and weekends as business needs require

About US Aggregates

US Aggregates is a privately held, family-owned business headquartered in Indianapolis. With over 20 operations across Indiana, US Aggregates has been a customer-focused, innovative provider of high-quality essential stone, sand and gravel used in road construction, site prep and utilities, agriculture and erosion control. The company also specializes in industrial minerals like dolomitic and high-calcium products. Since 1967, US Aggregates has built a reputation for prioritizing safety, quality and community. US Aggregates is a part of The Heritage Group's family of companies. Learn more at https://www.usagg.com.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.