Underground Coring

    MARKETS: Mining Development and Production

    Boart Longyear offers a diverse range of underground drilling services that can be perfectly tailored to meet each job—delivering safe productivity to every client. Our modular rigs and mobile platform make it easy for drill crews to move from site-to-site. Each rig is designed to meet an underground mine's room constraints while also meeting depth requirements.
    Count on Boart Longyear for:

    • Professionally trained crew with in-depth underground safety training
    • A range of underground coring rigs that offer modularity, significantly improving the safety, flexibility, mobility, and productivity of drill sites

    Deep Coring (+1,300m)

    Expertise and a range of large capacity drills enables us to drill over 1,300 meter angle and vertical hole projects.

    Directional Drilling

    Most types of directional work can be provided with our own technicians, mud motors, steering tools, and mud pumps to fit your needs.

    Fleet Range

    Drill RigLM™55LM™75LM™90
    Depth Up500 m650 m1,000 m
    Depth Down850 m1,700 m3,200 m
    Depth Horizontal950 m1,700 m2,000 m
    *The depths in this table are based on field experiences, and may be reasonably expected.


    Safety comes first in all activities. We adhere to all local regulatory safety requirements. We have a responsibility to ourselves, our employees, contractors, customers and shareholders to proactively work on strengthening our safety culture. Boart Longyear strives to ensure that our global base of clients can expect the same quality services at any site. Our people are the very foundation of this success and we are dedicated to hiring and training the best in the industry.

    Global EHS Management System

    Our Global EHS Management System (GEMS) is a web based system that captures data relating to injuries, motor vehicle incidents, equipment damage, environmental impacts, near misses and other safety related incidents of all employees spread across 40 countries.

    Stop Work Authority

    Boart Longyear employees are equipped with a "Stop Work Authority Card" that authorizes them to immediately stop any work that does not comply with safety standards. The Stop Work Authority Program ensures that employees will not be punished or reprimanded for doing so.

    Golden Rules of Safety

    The Golden Rules of Safety are a list of questions to ask while on the job. If the answer to any of the questions is NO, our employees stop and take the necessary corrective action and continue only when the answer is YES.

    Think ProgramTHINK Program

    In 2011, Boart Longyear launched a world-class safety campaign aimed at increasing the safety culture with employees. The THINK program instills in staff to never make any task menial and to always "THINK" before they act.

    Rules of the Road

    Safe driving is an essential component of the way we do business at Boart Longyear. The Rules of the road are designed to protect our employees, passengers, and the public. Adherence to the rules is a condition of employment.

    In-Vehicle Monitoring Program (inthinc)

    Boart Longyear uses an in-vehicle monitoring system that provides verbal coaching and weekly reports on driver performance and location. This program has been implemented on four continents with plans for future expansion.