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Illinois internships
Intern/Co-op - Refining Mechanical Engineer (Summer 2027)
Marathon Petroleum - Wilmington, CA, United States
2026-2027 U.S. Operations Intern/Co-op - Fall Posting
Dow - Texas City, TX, United States
Returning Project Controls Intern - Summer 2027 - Great Lakes Division (For Current/Former HNTB Interns Only)
HNTB - Cleveland, OH, United States
Intern/Co-op - HES&S Safety and Industrial Hygiene (Spring 2027)
Marathon Petroleum - Louisiana, United States
2026-2027 U.S. Operations Intern/Co-op - Fall Posting
Dow - Bristol, PA, United States
Intern/Co-op - Accounting (Summer 2027)
Marathon Petroleum - Wilmington, CA, United States
Intern/Co-op - HES&S Environmental (Spring 2027)
Marathon Petroleum - Kenai, AK, United States
Intern/Co-op - Refining Construction Management (Summer 2027)
Marathon Petroleum - Wilmington, CA, United States
