Mine Engineering Intern

Pennsy Supply Inc; Harrisburg (Dauphin County); On-site; USD 25,000 - 30,000; Part time

Job summary

Pennsy Supply Inc. is seeking a Mine Engineer Intern to join for approximately 10-12 weeks, applying classroom knowledge to the company’s mining operations. The intern will rotate through multiple plants in the Harrisburg market region, travel between sites, and collaborate with engineering and operations teams.

Safety is emphasized with MSHA/OSHA/DOT policies, and you will assist in mine planning, geology analysis, drone mapping, QA/QC, and field support across abandoned quarries.

Qualifications

• Junior in Mine Engineering or Geology.
• GPA 3.0 or higher preferred.
• Proficient with Word and Excel.

Responsibilities

• Adhere to safety policies and learn MSHA/OSHA/DOT rules.
• Collaborate with Operations to review mine planning and geology analysis.
• Assist in short/long term mine planning and cost-saving initiatives.
• Assist Drone Operator for mapping and stripping calculations.
• Perform field operations support at aggregates sites.
• Shadow operations staff to learn planning and objectives.

Education

Mine Engineering or Geology major

Tools

Microsoft Word

Microsoft Excel

Job description

Requisition ID528840-Posted09/14/2026-AMAT-Pennsy Supply Inc-Internship-Engineering-United States-Pennsylvania

Pennsy Supply is a CRH company. CRH is the leading vertically integrated supplier of asphalt, aggregates, cement, ready-mix concrete, and paving and construction services in North America. Our 24,100 employees at 1,300 operating locations provide our customers with top-quality, innovative products and services.

Position Overview

The Mine Engineer Intern will work for approximately 10-12 weeks at Pennsy Supply, Inc. to integrate the education received from a college and/or university to the company’s objectives. The Intern will be exposed to a variety of departments and work environments during the internship. This will involve travel to and between various plants in Pennsy Supply’s Harrisburg, PA market region.

Key Responsibilities (Essential Duties and Functions)

• Maintain strict adherence to all our Safety policies. You will learn the different rules and regulations of MSHA/OSHA/DOT and Pennsy Supply, Inc. in the early days of your internship.
• Working with Operations to review the following:
• Collaborates and conducts geological exploration and analysis.
• Assist in short/long term mine planning.
• Inventory management.
• Analyzing geology at multiple quarries
• Understand how plant operations work.
• Introduction to the engineering process
• 3-year capital expenditures
• Aggflow analysis
• Cost saving initiatives
• Assist Drone Operator for mine planning, topography mapping and stripping calculations.
• Quality Control/Quality Assurance
• Spend time in field operations for aggregates.
• Shadow operations personnel to learn operational planning and aggregate objectives.
• Work with crews and managers on blasting operations.
• Other duties as assigned.
• Regular and timely attendance

Education/Experience

• Mine Engineering or Geology major with college and/or University Junior.
• Desired 3.0 GPA or higher.
• Excellent computer skills and proficient in Word and Excel.

General Requirements

• Mobility to attend various meetings and events at offsite locations.
• Ability to travel with a current driver’s license.
• Must submit to a drug screen and criminal background check.

What CRH Offers You

• Highly competitive base pay
• Health and wellness programs
• An inclusive culture that values opportunity for growth, development, and internal promotion

About CRH

CRH has a long and proud heritage. We are a collection of hundreds of family businesses, regional companies and large enterprises that together form the CRH family. CRH operates in a decentralized, diversified structure that allows you to work in a small company environment while having the career opportunities of a large international organization.

Pennsy Supply, a CRH Company, is an Affordantive Action and Equal Opportunity Employer.

EOE/Vet/Disability

CRH is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, status as a protected veteran or any other characteristic protected under applicable federal, state, or local law.