About the role#
The Mine Engineering Intern role at Pennsy Supply, a CRH company, offers hands-on experience in the aggregates industry. This internship lasts for 10-12 weeks and involves working across various plants in the Harrisburg, Pennsylvania region. You will bridge your academic studies with practical company objectives through exposure to multiple departments and field environments.
What you'll do#
- Follow all safety policies and learn MSHA, OSHA, and DOT regulations.
- Conduct geological exploration and analysis across multiple quarries.
- Support short and long term mine planning, inventory management, and permitting.
- Assist with engineering processes including capital expenditure planning, Aggflow analysis, and equipment sizing.
- Evaluate cost saving initiatives and project payback criteria.
- Help the drone operator with topography mapping and stripping calculations.
- Perform quality control and quality assurance tasks.
- Spend time in field operations and shadow personnel to understand aggregate objectives and blasting operations.
What you'll need#
- Current enrollment as a Junior in a Mine Engineering or Geology program.
- A GPA of 3.0 or higher is preferred.
- Strong computer skills with proficiency in Microsoft Word and Excel.
- A valid driver's license and the ability to travel between sites.
- Ability to pass a drug screen and criminal background check.
Location & details#
- This role is based in Harrisburg, Pennsylvania.
- This is an on-site, full-time position.
- The internship follows a rolling schedule.
About CRH
CRH provides building materials for infrastructure projects. The company operates in the wholesale building materials sector. It focuses on transportation, water, and reindustrialization projects. The business maintains a network of local relationships to support its operations. It is headquartered in Dublin.
How to get in at CRH
Applying early to CRH gives you a distinct advantage because recruiters review applications before the pile grows. Intern Insider sends an instant alert the moment a role matching your target is published anywhere, so you can be among the first to submit your materials. This timing often determines whether your resume gets a thorough look. You can improve your response rate by reaching out to the people managing the hiring process directly. Intern Insider surfaces the recruiters behind the company roles, allowing you to ask about the position or a referral. Connecting with a human at CRH is much more effective than sending an application into a queue.



