Senior Estimating Manager (design-build MEP) JobotSenior Estimating Manager (design-build MEP)Omaha, NE$105,000–$158,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. We're one of the country's leading mechanical contractors, delivering HVAC, piping, and mechanical solutions on projects of every size and complexity — from stadiums and hospitals to power plants, manufacturing facilities, concert halls, and classrooms.
NewTechnology Services Team Manager NucorTechnology Services Team ManagerNorfolk, NE$120,000–$150,000 / yearThis role shapes how our Technology Services team — which includes Quality Assurance and Support, Data and Business Information, Security, and Software Architecture — helps deliver innovative solutions for Vulcraft/Verco’s manufacturing operations across North America. This role is ideal for a technical leader who thrives on coaching a distributed team and translating strategy into day-to-day execution — someone equally comfortable setting technical direction while engaging GTS teammates and our business customers for success.
NewGeneral Manager Production - B Shift - Dakota City Plant Tyson Fresh MeatsGeneral Manager Production - B Shift - Dakota City PlantDakota City, NebraskaSupervisory : Responsible for all Production Operations at the facility; includes managing all production supervisor’s department production schedules product rotation CCP verification schedules and overseeing safety committee; includes responsibility to review team members in these roles and develop improve deficient areas. Familiarity with processing floor operation is a plus; HACCP certification a plus understanding of basic HACCP principals and the ability to perform CCP monitoring verification; knowledge of fresh meats processing a plus.
NewPlant Manager Eaton CorporationPlant ManagerKearney, NE$165,000–$242,000 / yearPosition Overview: Reporting directly to the Director of Operations, Light Vehicle North America, this leader has responsibility for plant management including Production, Operational Excellence, Supply Chain, Program Management, HR, Finance and EHS. Develop and maintain a high performance culture focused on continuous improvement and change; provide leadership and commitment to ensure continued improvements in the focal areas of safety, quality, delivery, culture and cost.
Operations Manager (Pilot Plant) Conagra Brands, Inc.Operations Manager (Pilot Plant)Omaha, NE$82,000–$120,000 / yearPartner with Plants, Logistics, Sales & Operations Planning, Purchasing, Research, Quality & Innovation, Technology, Quality Assurance, Engineering, Finance, and cross-functional business teams. Serve as the primary Research & Development liaison to assigned business teams, supporting growth and cost and key performance indicator achievement for designated product categories and plants.
NewPlant Manager - Director of Operations Bluestem BiosciencesPlant Manager - Director of OperationsSouth Sioux City, NESupply Chain & Inventory Management: Maintain critical plant inventories, monitor chemical and feedstock supply levels, and proactively manage reordering processes to eliminate operational downtime and maintain uninterrupted production schedules. Technology Transfer Management: Partner with R&D, process development, and strain-engineering teams to establish formal Tech Transfer protocols, translating bench-top and pilot-scale process packages into scalable, robust plant operations.
Downstream Plant Manager Evonik Industries AGDownstream Plant ManagerBlair, NEPartner with Maintenance, Engineering, Quality, Logistics, Fermentation, and other site teams to support plant operations and achieve production goals. Look ahead with us and help shape innovative solutions to make our world more sustainable and life healthier, more vibrant and more comfortable.
Operations Manager (Pilot Plant) Conagra Brands IncOperations Manager (Pilot Plant)Omaha, NE$82,000–$120,000 / yearPartner with Plants, Logistics, Sales & Operations Planning, Purchasing, Research, Quality & Innovation, Technology, Quality Assurance, Engineering, Finance, and cross-functional business teams. Serve as the primary Research & Development liaison to assigned business teams, supporting growth and cost and key performance indicator achievement for designated product categories and plants.
NewGeneral Manager Production - B Shift - Dakota City Plant TysonGeneral Manager Production - B Shift - Dakota City PlantDakota City, NebraskaSupervisory : Responsible for all Production Operations at the facility; includes managing all production supervisor’s department production schedules product rotation CCP verification schedules and overseeing safety committee; includes responsibility to review team members in these roles and develop improve deficient areas. Familiarity with processing floor operation is a plus; HACCP certification a plus understanding of basic HACCP principals and the ability to perform CCP monitoring verification; knowledge of fresh meats processing a plus.
NewGeneral Manager Production - B Shift - Dakota City Plant Tyson FoodsGeneral Manager Production - B Shift - Dakota City PlantDakota City, NebraskaSupervisory : Responsible for all Production Operations at the facility; includes managing all production supervisor’s department production schedules product rotation CCP verification schedules and overseeing safety committee; includes responsibility to review team members in these roles and develop improve deficient areas. Familiarity with processing floor operation is a plus; HACCP certification a plus understanding of basic HACCP principals and the ability to perform CCP monitoring verification; knowledge of fresh meats processing a plus.
Plant Operator Bluestem BiosciencesPlant OperatorSouth Sioux City, NEAs a core member of the operations team, you will work on a shift schedule to monitor equipment, execute daily production runs, and support the facility's exciting transition from commissioning to full-scale commercial operation. We use American corn and existing bioethanol infrastructure to produce critical chemicals right here at home—powering U.S. competitiveness and securing our nation's supply chains - while reinvesting in agricultural America.
Plant Engineer EvonikPlant EngineerBlair, NebraskaBe the “asset owner” for maintenance budget, spares inventory and management, equipment lifecycle management, technical optimization, preventive and predictive equipment maintenance applications, gatekeeping and shutdown management concept. Provide technical support on equipment issues, develop scopes for technical or capex changes, execute MOC's and follow-up on incident investigations, non-conformances and PHA.
Plant Superintendent EvonikPlant SuperintendentBlair, NebraskaThe position works closely with cross-functional teams to optimize plant performance, maintain equipment reliability, and ensure products are delivered safely, efficiently, and on schedule. The Downstream Plant Manager is responsible for overseeing the safe, efficient, and reliable operation of the Biolys, Omega-3 Fatty Acids, and Utilities plants.
NewAsphalt Plant Operator for Mobile Asphalt Operations Western Engineering Co IncAsphalt Plant Operator for Mobile Asphalt OperationsOmaha, NEAt Western Engineering Co., Inc. , we value our employees and are committed to rewarding hard work and dedication with a competitive benefits package, including: Employee Stock Ownership Plan (ESOP) – Become an employee-owner and share in the company's success. This is an excellent opportunity for someone who enjoys travel, working with heavy equipment, solving mechanical and operational challenges, and working outdoors as part of a hardworking team.
Stationary Engineer-Plant Faith Regional Health ServicesStationary Engineer-PlantNorfolk, NEInspects, tests, and coordinates repairs of all physical facility machinery, limited-heating, cooling, piping and electrical systems, records maintenance in accordance with schedules and resources available; provides appropriate follow-up with identified wear and defects of various system checks. Responsibilities: Essential Job Duties and Responsibilities: Operates stationary engines and mechanical equipment including steam boilers, generators, steam turbines, air conditioners, distiller, and water softeners to provide utility services, and observes meters to determine operating conditions of equipment.
Financial Controller / Plant Controller Weekday AIFinancial Controller / Plant ControllerSeward, NebraskaThe strongest candidates will likely have experience as a Financial Controller, Plant Controller, Manufacturing Controller, Operations Finance Manager, Plant Finance Manager, or Manufacturing Accounting Manager. From accounting processes and internal controls to ERP implementation, inventory, cost accounting, and operational reporting, you'll help shape how finance supports the business as the facility continues to grow.
Plant Foreperson (Internal Applicants Only) - Gretna, NE AMAT CentralPlant Foreperson (Internal Applicants Only) - Gretna, NEGretna, NEManages, and communicates with Area Managers and Operations Manager issues affecting personnel, safety, maintenance, production efficiency, product quality, current and upcoming projects, competition and pricing. This includes training employees, planning, assigning, and directing work, appraising performance, rewarding employees, disciplining employees, long term personnel development and succession planning, as well as addressing complaints and resolving problems.
Plant Foreperson (Internal Applicants Only) - Blair, NE AMAT CentralPlant Foreperson (Internal Applicants Only) - Blair, NEBlair, NEFounded 150 years ago by a Civil War veteran and pioneer, Gerhold Concrete Company, Inc., A CRH Company, is a major regional supplier of concrete and building materials with 15 locations across Nebraska and Iowa, serving areas in central and northeastern Nebraska, southeastern South Dakota, and western Iowa. This includes training employees, planning, assigning, and directing work, appraising performance, rewarding employees, disciplining employees, long term personnel development and succession planning, as well as addressing complaints and resolving problems.
SIMON | Batch Plant Operator (SCOTTSBLUFF, NE, US, 69361) Colas SASIMON | Batch Plant Operator (SCOTTSBLUFF, NE, US, 69361)SCOTTSBLUFF, NESupports ready-mix and aggregate production and sales through operation of plant controls and mobile equipment, coordination of material usage, ordering raw materials, assisting with dispatch and trucking logistics, ensuring product quality and regulatory compliance, and performing related duties as assigned, including driving ready-mix trucks when required. We specialize in aggregate, asphalt, and ready-mix concrete materials production, with expert teams providing high-quality asphalt paving, concrete, bridge, and utility construction services.
NewAsphalt Plant Operator For Mobile Asphalt Operations Western Engineering Co IncAsphalt Plant Operator For Mobile Asphalt OperationsOmaha, NEAt Western Engineering Co., Inc. , we value our employees and are committed to rewarding hard work and dedication with a competitive benefits package, including: Employee Stock Ownership Plan (ESOP) – Become an employee-owner and share in the company's success. This is an excellent opportunity for someone who enjoys travel, working with heavy equipment, solving mechanical and operational challenges, and working outdoors as part of a hardworking team.
Manufacturing Engineer - Plant Execution Systems Eaton CorporationManufacturing Engineer - Plant Execution SystemsOmaha, NE$86,000–$126,000 / yearBuilds practical lean capability by coaching leaders, engineers, supervisors, and operators during improvement events, gemba walks, problem-solving sessions, and sustainment reviews rather than relying primarily on classroom training. Eaton's Electrical Sector- Power Distribution & Controls Assemblies (PDCA) business is seeking a Manufacturing Engineer- Plant Execution Systems to join our manufacturing OPEX team in Omaha, Nebraska.
Trainee Operations Management-1st Shift- Waverly Plant TysonTrainee Operations Management-1st Shift- Waverly PlantWaverly, NebraskaAny resumes or candidate profiles submitted by recruitment vendors or headhunters to any employee or applicant tracking system at Tyson Foods or its subsidiaries, without a valid written request and search agreement approved by HR, will be considered the property of Tyson Foods. Candidates should understand that they will rotate through multiple departments and learn how the plant operates from end to end, including areas such as Receiving, Production, Maintenance, Engineering, Quality Assurance, and other support functions .
Supervisor Refrigeration-1st Shift- Tecumseh Plant TysonSupervisor Refrigeration-1st Shift- Tecumseh PlantTecumseh, NebraskaAny resumes or candidate profiles submitted by recruitment vendors or headhunters to any employee or applicant tracking system at Tyson Foods or its subsidiaries, without a valid written request and search agreement approved by HR, will be considered the property of Tyson Foods. The Refrigeration/Boiler Supervisor is responsible for overseeing the operation, maintenance, and compliance of the Ammonia Refrigeration System, including associated PSM requirements, as well as boiler, air/pneumatic, and HVAC systems.
Supervisor Refrigeration-1st Shift- Tecumseh Plant Tecumseh PoultrySupervisor Refrigeration-1st Shift- Tecumseh PlantTecumseh, NebraskaAny resumes or candidate profiles submitted by recruitment vendors or headhunters to any employee or applicant tracking system at Tyson Foods or its subsidiaries, without a valid written request and search agreement approved by HR, will be considered the property of Tyson Foods. SUMMARY: The Refrigeration/Boiler Supervisor is responsible for overseeing the operation, maintenance, and compliance of the Ammonia Refrigeration System, including associated PSM requirements, as well as boiler, air/pneumatic, and HVAC systems.
NewTrainer- 2nd Shift- Tecumseh Plant Tecumseh PoultryTrainer- 2nd Shift- Tecumseh PlantTecumseh, NebraskaP2 Job Description SUMMARY : Responsibilities include: conduct safety and forklift training and continually improve classroom orientation programs; ensure all new Team Member documentation is completed in a timely manner and submitted to their file; annual training for plant employees and on the job training for Employees. Other duties include: assess the need for interpreters in various departments for communications clarity and coordinate the assistance of the interpreter; assist in acclimating new Team Members in and around the confines of the facility and with the qualification process; other duties as assigned.
Trainee Operations Management-1st Shift- Waverly Plant Tecumseh PoultryTrainee Operations Management-1st Shift- Waverly PlantWaverly, NebraskaAny resumes or candidate profiles submitted by recruitment vendors or headhunters to any employee or applicant tracking system at Tyson Foods or its subsidiaries, without a valid written request and search agreement approved by HR, will be considered the property of Tyson Foods. Candidates should understand that they will rotate through multiple departments and learn how the plant operates from end to end, including areas such as Receiving, Production, Maintenance, Engineering, Quality Assurance, and other support functions .
Plant Foreperson (Internal Applicants Only) - Gretna, NE CRH PlcPlant Foreperson (Internal Applicants Only) - Gretna, NEGretna, NEManages, and communicates with Area Managers and Operations Manager issues affecting personnel, safety, maintenance, production efficiency, product quality, current and upcoming projects, competition and pricing. This includes training employees, planning, assigning, and directing work, appraising performance, rewarding employees, disciplining employees, long term personnel development and succession planning, as well as addressing complaints and resolving problems.
Plant Foreperson (Internal Applicants Only) - Blair, NE CRH PlcPlant Foreperson (Internal Applicants Only) - Blair, NEBlair, NEFounded 150 years ago by a Civil War veteran and pioneer, Gerhold Concrete Company, Inc., A CRH Company, is a major regional supplier of concrete and building materials with 15 locations across Nebraska and Iowa, serving areas in central and northeastern Nebraska, southeastern South Dakota, and western Iowa. This includes training employees, planning, assigning, and directing work, appraising performance, rewarding employees, disciplining employees, long term personnel development and succession planning, as well as addressing complaints and resolving problems.
Plant Foreperson (Internal Applicants Only) - Gretna, NE Lyman-Richey CorporationPlant Foreperson (Internal Applicants Only) - Gretna, NEGretna, NEFull timeManages, and communicates with Area Managers and Operations Manager issues affecting personnel, safety, maintenance, production efficiency, product quality, current and upcoming projects, competition and pricing. This includes training employees, planning, assigning, and directing work, appraising performance, rewarding employees, disciplining employees, long term personnel development and succession planning, as well as addressing complaints and resolving problems.
NewPlant Quality Engineer CNH Industrial NVPlant Quality EngineerGrand Island, NEAdditionally, you can freely decide and change any time whether you accept cookies or choose to opt out of cookies to improve website''s performance, as well as cookies used to display content tailored to your interests. YouTube is a video-sharing service where users can create their own profile, upload videos, watch, like, and comment on videos.
Plant Logistics Supervisor CNH Industrial NVPlant Logistics SupervisorGrand Island, NEAdditionally, you can freely decide and change any time whether you accept cookies or choose to opt out of cookies to improve website''s performance, as well as cookies used to display content tailored to your interests. YouTube is a video-sharing service where users can create their own profile, upload videos, watch, like, and comment on videos.
Interior Plant Care Technician Wright Outdoor SolutionsInterior Plant Care TechnicianOmaha, NebraskaJOB SUMMARY: The Interior Plant Care Technician is responsible for servicing interior plant displays with great precision and efficiency, promoting a clean worksite, and exhibits pride and quality workmanship. ESSENTIAL JOB FUNCTIONS : Reasonable accommodations may be made to enable individuals with disabilities to perform the essential job functions: Service interior plant displays, flower and replica foliage on specified days.
Relief Plant Dispatcher - Omaha, NE (Internal Applicants Only) AMAT CentralRelief Plant Dispatcher - Omaha, NE (Internal Applicants Only)Omaha, NEWhen providing dispatch coverage, this position will manage the driver’s schedule and routes while maintaining positive relationships with our internal and external customers, production teams and service personnel. Individuals are required to wear personal protective equipment (PPE) in designated operations and production areas as stated by OSHA and/or MSHA, Company Policy and specific Job Site Requirements.
Pipe Insulation Project Manager GpacPipe Insulation Project ManagerPapillion, NE70000–130000Looking for someone with project experience with industrial manufacturing, food processing, ethanol plants, oil & gas facilities, data centers, power generation facilities, carbon capture facilities, cold storage facilities, or plant maintenance & shutdown turnaround projects. The ideal candidate will have hands-on experience managing industrial insulation projects , including piping, equipment, tanks, vessels, boilers, process systems, and mechanical insulation applications .
Relief Plant Dispatcher - Omaha, NE (Internal Applicants Only) CRH PlcRelief Plant Dispatcher - Omaha, NE (Internal Applicants Only)Omaha, NEWhen providing dispatch coverage, this position will manage the driver's schedule and routes while maintaining positive relationships with our internal and external customers, production teams and service personnel. Individuals are required to wear personal protective equipment (PPE) in designated operations and production areas as stated by OSHA and/or MSHA, Company Policy and specific Job Site Requirements.
NewShipping & Receiving Operator - Ethanol Plant Valero Energy CorpShipping & Receiving Operator - Ethanol PlantAlbion, NEOperations/Skilled Crafts & Trades/Maintenance'',''Operations/Skilled Crafts & Trades/Maintenance'',''US-NE-Albion'',''US-NE-Albion'','''','''',''Aug 12, 2026, 4:04:54 PM'',''Aug 12, 2026, 4:04:54 PM'',''Ongoing'',''Ongoing'',''false'',''312538'',''312538'',''true'',''312538'',''false'',''Submission for the position: Shipping & Receiving Operator - Ethanol Plant - (Job Number: 26001B0)'',''false'',''312538'',''false'',''true''. ''312538'',''true'',''312538'',''false'',''Submission for the position: Shipping & Receiving Operator - Ethanol Plant - (Job Number: 26001B0)'',''false'',''312538'',''false'',''true'',''Shipping & Receiving Operator - Ethanol Plant'',''26001B0'',''!*!
Project Manager Industrial GpacProject Manager IndustrialLa Vista, NE70000–130000The ideal candidate will have hands-on experience managing industrial insulation projects , including piping, equipment, tanks, vessels, boilers, process systems, and mechanical insulation applications . GPAC (Growing People and Companies) is an award-winning search firm specializing in placing quality professionals within multiple industries across the United States since 1990.
Supervisor Refrigeration-1st Shift- Tecumseh Plant Tyson FoodsSupervisor Refrigeration-1st Shift- Tecumseh PlantTecumseh, NebraskaAny resumes or candidate profiles submitted by recruitment vendors or headhunters to any employee or applicant tracking system at Tyson Foods or its subsidiaries, without a valid written request and search agreement approved by HR, will be considered the property of Tyson Foods. SUMMARY: The Refrigeration/Boiler Supervisor is responsible for overseeing the operation, maintenance, and compliance of the Ammonia Refrigeration System, including associated PSM requirements, as well as boiler, air/pneumatic, and HVAC systems.
Trainee Operations Management-1st Shift- Waverly Plant Tyson FoodsTrainee Operations Management-1st Shift- Waverly PlantWaverly, NebraskaAny resumes or candidate profiles submitted by recruitment vendors or headhunters to any employee or applicant tracking system at Tyson Foods or its subsidiaries, without a valid written request and search agreement approved by HR, will be considered the property of Tyson Foods. Candidates should understand that they will rotate through multiple departments and learn how the plant operates from end to end, including areas such as Receiving, Production, Maintenance, Engineering, Quality Assurance, and other support functions .
Relief Plant Dispatcher - Omaha, NE (Internal Applicants Only) Lyman-Richey CorporationRelief Plant Dispatcher - Omaha, NE (Internal Applicants Only)Omaha, NEFull timeWhen providing dispatch coverage, this position will manage the driver's schedule and routes while maintaining positive relationships with our internal and external customers, production teams and service personnel. Individuals are required to wear personal protective equipment (PPE) in designated operations and production areas as stated by OSHA and/or MSHA, Company Policy and specific Job Site Requirements.
NewSupervisor Production-1st Shift-Waverly Plant Tecumseh PoultrySupervisor Production-1st Shift-Waverly PlantWaverly, Nebraska1ST SHIFT (United States of America) For Professional Management levels, internal applicants should either upload a resume to their application OR complete their application fully showing current and past work experience in the sections provided. The role requires a strong understanding and control of the production process, accurate recordkeeping, and overall line maintenance and staffing.
Production Supervisor – Staging/Whole Bird- 2nd Shift- Waverly Plant Tecumseh PoultryProduction Supervisor – Staging/Whole Bird- 2nd Shift- Waverly PlantWaverly, NebraskaResponsibilities include overseeing shipment verification, maintaining accurate inventory records, preparing products for shipment, supporting waste‑recovery processes, and ensuring quality whole‑bird hanging and whole bird packaging. 2ND SHIFT (United States of America) For Professional Management levels, internal applicants should either upload a resume to their application OR complete their application fully showing current and past work experience in the sections provided.
Supervisor Production-2nd Shift-Tecumseh Plant Tecumseh PoultrySupervisor Production-2nd Shift-Tecumseh PlantTecumseh, NebraskaKey responsibilities include reviewing daily production orders to ensure customer fulfillment, ensuring all production positions are staffed prior to line startup, overseeing Team Member warm-up exercises and job rotation practices to support ergonomics, and monitoring equipment performance to ensure optimal operation. 2ND SHIFT (United States of America) For Professional Management levels, internal applicants should either upload a resume to their application OR complete their application fully showing current and past work experience in the sections provided.
Quality Control Manager Enterprise Precast ConcreteQuality Control ManagerOmaha, NEThis position directs and coordinates all activities of the Quality Control Department and testing laboratory; works with the Operations and Plant Managers to ensure that all PCI requirements are being met; communicates and collaborates with other managers to optimize production quality and workflow, as well as direct and coach other Quality Control Personnel. Evaluates the work of other Quality Control personnel for the purpose of determining skill level, training needs, and the potential for increased responsibility while coaching employees to help develop their career.
Asphalt Plant Operator - Omaha, NE CRH AmericasAsphalt Plant Operator - Omaha, NEOmaha, NEAbility to frequently talk, hear, walk, reach use hands and fingers to manipulate objects or controls, and sit as well as occasionally required to stand, climb or balance, stoop, kneel and crouch. Responsible for computer-based entry of production data, mix design details, product orders, and related communications.
NewSenior Lab Microbiologist Dakota City Plant Tyson Fresh MeatsSenior Lab Microbiologist Dakota City PlantDakota City, Nebraska1ST SHIFT (United States of America) For Professional Management levels, internal applicants should either upload a resume to their application OR complete their application fully showing current and past work experience in the sections provided. P2 Responsibilities will vary from performing a single procedure or work instruction to conducting multiple analytical microbiological or quality system procedures and work instructions in a food safety laboratory.
NewAdministrator Operations-1st Shift- Tecumseh Plant Tecumseh PoultryAdministrator Operations-1st Shift- Tecumseh PlantTecumseh, NebraskaThe role is responsible for maintaining supplies and consumables, processing documentation, coordinating equipment maintenance, supporting safety and biosecurity programs, and assisting with routine laboratory operations. 1ST SHIFT (United States of America) For Professional Management levels, internal applicants should either upload a resume to their application OR complete their application fully showing current and past work experience in the sections provided.
Trainer-1st Shift - Waverly Plant Tecumseh PoultryTrainer-1st Shift - Waverly PlantWaverly, Nebraska1ST SHIFT (United States of America) For Professional Management levels, internal applicants should either upload a resume to their application OR complete their application fully showing current and past work experience in the sections provided. The position also supports onboarding, documentation compliance, training record management, and effective communication between team members and operational departments.
Senior Plant Lean Change Agent Trane Technologies PlcSenior Plant Lean Change AgentHastings, NE$89,585–$124,950 / yearMinimum 3 years of experience working in a Lean environment, training, coaching and developing Lean principles and continuous improvement based tools and techniques required. Experience facilitating at least 30 successful Rapid Improvement events using a defined process, with proven capability to deliver significant improvement in operational and financial metrics.
Quarry Manager Americas Cement EastQuarry ManagerOmaha, NEAsh Grove family of companies, including Ash Grove Cement Company, Ash Grove South Texas, LLC, Sapphire Americas LLC, Oldcastle Cement Holdings, Houston Cement Company, and Suwanee American Cement Company, is one of North America’s leading cement manufacturers, with a legacy of innovation and excellence dating back to 1882. Cooperates with other department managers in coordinating production operations with the quarry operations to supply the needed amount of raw materials from the quarry while providing maintenance time on quarry equipment.