Plant Administrator & Warehouse Associate

Minerals Technologies•Lucerne Valley, CA

4d•$29 - $32•Onsite

About The Position

The Plant Admin & Warehouse Associate performs a combination of administrative, inventory management, and warehouse support functions to ensure the efficient operation of production, packaging, and mining activities. This role supports purchasing, invoicing, and asset management processes utilizing Oracle and Microsoft 365 tools. The position plays a critical role in maintaining operational continuity, inventory accuracy, and a safe, organized work environment aligned with MTI’s safety culture.

Requirements

High school diploma or equivalent
Minimum of 5 years of administrative experience
Proficiency in Microsoft 365 (Excel, Word, PowerPoint)
Experience working with inventory systems or ERP software (Oracle preferred)
Strong organizational and time management skills
Ability to work independently and manage multiple priorities
Ability to stand, walk, bend, squat, climb, and lift up to 50 pounds occasionally
Ability to operate mobile equipment and perform repetitive motions
Manual dexterity and visual acuity required
Ability to work in confined spaces and varying environmental conditions
Must be able to work flexible hours as needed, including overtime, weekends, and holidays
Respond to call-ins as required to support operations
Complete all required MSHA and company safety training, including equipment operation, hazard communication, and emergency response
Participate in refresher and ongoing training as required
Follow all safety procedures, including use of required personal protective equipment (PPE)
Demonstrate initiative, accountability, and sound judgment
Maintain professionalism when interacting with internal and external stakeholders
Follow all company policies, procedures, and safety standards

Nice To Haves

Experience in a mining or industrial environment
Forklift certification (or ability to obtain certification)
Knowledge of purchasing, invoicing, and accounting processes

Responsibilities

Manage invoicing processes, including recurring invoices, discrepancy resolution, and coordination with corporate purchasing and accounting teams
Support receiving processes and resolve pricing or billing discrepancies
Track and manage facility utility expenses
Purchase and maintain office supplies
Manage incoming and outgoing mail, including packaging and shipping of light freight
Maintain inventory levels for fuel (gasoline, diesel, propane) and critical materials
Operate forklifts and other mobile equipment to load, unload, and move materials
Maintain spare parts inventory and recommend appropriate stock levels
Issue and track MRO inventory using company systems
Create, update, and maintain inventory and transactional records in Oracle
Utilize Microsoft 365 (Excel, Word, PowerPoint) to track, analyze, and report data
Record and maintain labor and operational data from work shifts
Review documents prepared by team members for accuracy and completeness
Act as a liaison across departments to ensure timely and accurate distribution of materials, data, and information
Communicate effectively with internal teams, suppliers, and corporate partners
Provide cross-functional support and coverage during employee absences
Participate in continuous improvement initiatives, including 5S, Kaizen, TPM, Daily Management, and Standard Work
Assist in developing and following standardized processes
Identify opportunities to improve efficiency, accuracy, and inventory control
Perform all work in accordance with company safety policies and MSHA regulations
Actively promote and support a positive safety culture
Demonstrate leadership through safe work practices, teamwork, and a positive attitude
Perform other duties and special projects as assigned