Build your career at US Aggregates! The Mine Engineer Intern supports continuous improvement and capital project activities across U.S. Aggregates' 27 Indiana plant locations, contributing analytical and technical skills to real-world operations challenges. Working alongside operations, safety, sales, quality, and engineering teams, this intern gains broad exposure to aggregate production environments while completing a defined summer project designed to drive measurable operational efficiency improvements. The ideal candidate is self-motivated, analytically minded, and eager to apply engineering fundamentals in a hands-on industrial setting. This position will be primarily located out of our U.S. Aggregates corporate office in Indianapolis, IN, with frequent travel to plant sites across Indiana. The schedule for this internship position is full-time, aligned with the summer term; occasional extended hours may be required to meet project milestones. Essential Functions Analyzes daily operational procedures, performance metrics, and production trends across U.S. Aggregates plant sites to identify efficiency improvement opportunities and develop data-driven recommendations Supports incident investigations by contributing to root cause analysis, coordinating the execution of corrective action items, and tracking continuous improvement activities to reduce recurrence Collaborates with Plant Managers and the Quality Manager to review operating procedures, collect and analyze production data, and contribute to strategies that optimize aggregate production performance Designs and delivers a defined summer project — including a final presentation to U.S. Aggregates leadership — with clear objectives, documented findings, and measurable outcome recommendations Prepares project justifications and supporting documentation that communicate technical findings and recommendations clearly to operational and engineering stakeholders Applies technical and analytical skills across operations, safety, quality, sales, and engineering functions, building a comprehensive foundation in aggregate production and mine engineering 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 Currently pursuing a Bachelor's degree in Mechanical, Civil, or Mining Engineering required — sophomore, junior, and senior candidates are preferred; recent graduates will also be considered Experience Qualifications 1+ years of work or internship experience in a professional, technical, or trades environment preferred Skills and Abilities Working knowledge of engineering principles with the ability to apply technical concepts to operational analysis, process improvement, and capital project support in an aggregate production environment Proficiency in Microsoft Office Suite, including Excel (data analysis, pivot tables) and PowerPoint; working knowledge of AutoCAD or similar technical drafting or design software to support project documentation and analysis Strong verbal and written communication skills, with the ability to present technical findings clearly and professionally to both operational teams and senior leadership Demonstrated problem-solving and critical thinking skills, with the ability to analyze operational data, identify root causes, and develop practical, data-driven recommendations Self-motivated and organized, with strong time management skills and the ability to manage multiple priorities independently in a dynamic, multi-site field environment Ability to work collaboratively across cross-functional teams and to adapt effectively in a hands-on industrial environment Working Conditions/Physical Demands Work is performed across a combination of office and active aggregate plant environments, with regular exposure to dust, noise, vibration, and outdoor conditions during site visits This role requires travel to plant locations across Indiana as business needs dictate Work involves both desk-based analytical work and active site walkthroughs requiring sustained walking, standing, crouching, and kneeling Must be able to lift, carry, or move materials or equipment weighing up to 50 pounds All site work is performed in compliance with U.S. Aggregates safety standards; appropriate personal protective equipment (PPE) is required at all times on-site 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. #USAGG Heritage Construction + Materials provides diverse careers in road construction and material supply throughout the Midwest. Here you can define your own path to success and build a career made to last. Heritage Construction and Materials is a proud member of The Heritage Group family of companies. Explore all Heritage Group career opportunities here. We respect your privacy. By clicking the link above and submitting the interest form, you acknowledge that you have read and agreed to our privacy policy. If you are a California resident, you acknowledge that you have read the privacy notices for the applicable companies in which you are interested in receiving alerts, including Envita Solutions, Monument Chemical, Asphalt Materials, Inc., Heritage Aggregates, LLC d/b/a US Aggregates, U.S. Aggregates, Inc., and Milestone Contractors, L.P.

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