Assistant Core Driller

Martin Marietta Materials; Garner (NC); On-site; USD 52,000 - 68,000; Full time

Benefits offered by this job

Per Diem for lodging and meals

Competitive benefits package

Travel opportunities across US

Job summary

Martin Marietta in Garner, NC seeks an Assistant Core Driller to support drilling operations, learn from the Core Driller, and gain hands-on experience in sampling, equipment maintenance, and field safety.

This role involves outdoor work, long field rotations, travel across the United States, and DOT-regulated vehicle operation; per diem lodging and meals are provided, and growth to a Core Driller is encouraged.

Qualifications

• High school diploma or GED required.
• Valid driver's license with clean record.
• Ability and willingness to obtain a Class A CDL.

Responsibilities

• Promote safety, environmental stewardship, and operational excellence.
• Assist with transportation, mobilization, operation, and demobilization of drilling equipment and vehicles.
• Support daily drilling operations under the Core Driller's direction.
• Assist with rig setup, drilling fluid management, rod handling, core retrieval, and site housekeeping.
• Collect, label, document, and transport geological core samples and data.
• Maintain core boxes and sample handling procedures for data quality.
• Perform routine inspections and minor repairs on drilling rigs and equipment.
• Assist with troubleshooting to minimize downtime.
• Load/unload/secure transport equipment per DOT rules.
• Maintain field records and project documentation.
• Ensure clean, organized, and safe work areas at sites and facilities.
• Participate in pre-job inspections and safety meetings.
• Communicate effectively with team and stakeholders.
• Develop skills for progression to Core Driller.

Skills

Safety-conscious

Mechanical aptitude

Teamwork

Communication

Education

High school diploma or GED

CDL Class A (preferred)

Tools

DOT-regulated vehicle operation

Drilling equipment maintenance

Heavy equipment operation

Diesel engines knowledge

Job description

Martin Marietta is seeking a motivated, safety-focused Assistant Core Driller to join the Exploration Services team based in Garner, North Carolina. The Assistant Core Driller supports the Core Driller in the safe and efficient transportation, setup, operation, maintenance, and demobilization of company drilling equipment and support vehicles during aggregate exploration and reserve development projects throughout the United States including both surface and underground mining operations.This position serves as the primary developmental role within the drilling organization and provides hands-on training in drilling operations, geological sample collection, equipment maintenance, and field safety. The Assistant Core Driller works closely with the Core Driller to obtain high-quality geological data used to quantify and qualify mineral reserves while developing the technical, mechanical, and leadership skills necessary to advance to a Core Driller position.This position involves extensive outdoor work in varying weather conditions, terrain, and operating environments. Frequent travel and overnight stays are required, with work rotations that may include up to fourteen consecutive days in the field before returning home. Travel time is paid at normal hourly rate and a Per Diem is provided for lodging and meals reimbursement. Applicants are required to operate DOT-regulated vehicles across state lines and, therefore, must be at least 21 years of age and maintain a current Medical Examiner's Certificate in accordance with applicable DOT regulations.

Responsibilities:

• Promote and uphold Martin Marietta's commitment to safety, environmental stewardship, and operational excellence.
• Assist with the transportation, mobilization, operation, and demobilization of diamond core drilling equipment, support vehicles, tooling, and auxiliary equipment.
• Support daily drilling operations under the direction of the Core Driller.
• Assist with rig setup, alignment, drilling fluid management, rod handling, core retrieval, and site housekeeping duties.
• Collect, photograph, label, package, document, and transport geological core samples and associated field data.
• Maintain core boxes and assist with sample handling procedures to ensure data quality and sample integrity.
• Perform routine inspections, preventative maintenance, cleaning, lubrication, and minor repairs on drilling rigs, vehicles, pumps, hydraulic systems, and support equipment.
• Assist with troubleshooting mechanical and operational issues to minimize downtime.
• Load, unload, secure, and transport equipment and materials in accordance with DOT requirements and company policies.
• Maintain accurate field records, sample inventories, maintenance logs, and project documentation.
• Maintain clean, organized, and safe work environments at drilling sites, shop facilities, and staging locations.
• Participate in pre-job inspections, hazard assessments, safety meetings, and training activities.
• Communicate effectively with Core Drillers, geologists, project managers, mine personnel, and other stakeholders.
• Develop the technical, operational, and leadership skills required for progression into the Core Driller role.

Qualifications:

• High school diploma, GED, or equivalent.
• Valid driver's license with a satisfactory driving record.
• Ability and willingness to obtain a Class A Commercial Driver's License (CDL).
• Ability to pass a pre-employment drug screening, background check, and DOT physical.
• Strong mechanical aptitude and willingness to learn drilling equipment maintenance and repair.
• Ability to work effectively as part of a team and follow direction from the Core Driller.
• Strong communication skills and a positive attitude toward learning and professional development.
• Ability to work 10 to 12-hour shifts in physically demanding environments.
• Ability to repeatedly lift and carry 50 to 75 pounds without assistance.
• Ability and willingness to work outdoors in all weather conditions and at surface and underground mining operations.
• Willingness to travel extensively throughout the United States and work multi-day field assignments.
• Reliable attendance history and demonstrated commitment to safety and professionalism.
• Ability to operate vehicles equipped with manual transmissions.

Preferred:

• Previous experience in drilling, mining, construction, heavy equipment operation, mechanical maintenance, or related industrial environments.
• Experience towing trailers and operating commercial vehicles.
• Commercial Driver's License (CDL) or ability to obtain one quickly.
• Experience with diesel engines, hydraulic systems, pumps, and mechanical troubleshooting.
• MSHA Underground Miner certification or previous mining experience.
• Experience working in outdoor, industrial, mining, quarrying, geotechnical, environmental, or exploration drilling environments.

A member of the S&P 500 Index, Martin Marietta is an American-based company and a leading supplier of heavy building materials - including aggregates, cement, ready-mixed concrete and asphalt. Through a network of operations spanning 28 states, Canada and the Bahamas, dedicated Martin Marietta teams supply the foundational resources upon which our communities thrive. Martin Marietta's Magnesia Specialties business produces high-purity magnesia and dolomitic lime products used worldwide in environmental, industrial, agricultural and specialty applications. At Martin Marietta, we strive to work with the best and the brightest - those who have the potential to become our company's future leaders. Each of our roughly 9,500 people shares a common purpose regardless of their professional role or work environment. Together, we utilize our diverse skills and experiences to drive our company and its extraordinary culture forward. Our aim is to build on our foundation of success and help values-driven and hardworking people realize their full potential. When you decide to invest your career in Martin Marietta, you'll know what it's like to be respected, challenged and rewarded.

In return, we offer a highly competitive benefits package, including: Medical Prescription Drug Dental Vision Health Care Reimbursement Account Dependent Care Reimbursement Account Wellness Programs Employee Assistance Plan Paid Holidays and Vacation 401(k) with Company matching Pension Salary Continuation - Short-Term Disability Long-Term Disability Options Employee Life Insurance Spouse & Dependent Life Insurance Business Travel Accident Insurance Direct Deposit Payroll Educational/Tuition Assistance Plan College Scholarship Program - for dependent children Matching Gift Program New Auto Purchase Discount Plans

We are proud to be an Equal Opportunity Employer. We are committed to providing an environment of mutual respect where equal employment opportunities are available to all qualified applicants and teammates. We celebrate diversity and commit that qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.