About Jerritt Canyon The Jerritt Canyon deposit was discovered in 1972, and the first gold production from the property occurred in 1981. The Jerritt Canyon property contains 30,821 hectares of mining claims located in the mining-friendly state of Nevada. First Majestic acquired the Jerritt Canyon Gold Mine from Sprott Mining Inc. on April 30, 2021. In May 2023, operations were suspended to prioritize exploration and technical studies. Jerritt Canyon is now entering a new phase of evaluation and planning, requiring substantial technical support to advance the work necessary for a potential future restart of operations. The Opportunity The Underground ElectricalInstrumentation (E&I) Technician is responsible for installing, maintaining, troubleshooting, calibrating, and repairing electrical, instrumentation, communication, and control systems used in underground mining operations. The role supports safe, reliable, and efficient mine production by ensuring all underground electrical and automation systems comply with operational and regulatory standards. Responsibilities Inspect, maintain, and repair underground electrical systems and equipment. Diagnose faults in low, medium, and high voltage systems. Perform preventative and predictive maintenance on electrical mining equipment and infrastructure. Troubleshoot motor control centers (MCCs), variable frequency drives (VFDs), transformers, switchgear, substations, and distribution systems. Install and terminate electrical cables, conduits, junction boxes, and control panels. Read and interpret electrical schematics, blueprints, and technical drawings. Install, calibrate, and maintain instrumentation devices including: Pressure transmitters Flow meters Level sensors Gas detection systems Stench alarm systems Support PLC and SCADA systems used for mine automation and process control. Troubleshoot communication systems such as fiber optics, radios, telemetry, and networked control systems. Configure and maintain automated monitoring systems and alarms. Support electrical systems on underground mobile equipment such as: Jumbo drills Bolter drills Stope drills Load-haul-dump (LHD) machines Conveyors Pumps Ventilation fans Assist with dewatering systems, ventilation controls, and emergency backup systems. Respond to underground equipment breakdowns and emergency maintenance calls. Follow all MSHA, OSHA, company, and site-specific safety procedures. Conduct lockout tagout (LOTO) procedures and electrical isolation safely. Participate in hazard assessments, risk analysis, and safety meetings. Ensure all electrical installations comply with applicable mining and electrical codes. Maintain accurate maintenance records and documentation. Coordinate with operations, engineering, maintenance planners, and contractors. Train or mentor apprentices and junior technicians when required. Provide shift handover reports and communicate equipment status effectively. The above responsibilities are representative and may not include all assigned duties. Education and Experience High school diploma or GED required; Associate degree or diploma in electrical technology, instrumentation technology, mechatronics, industrial electrical systems or related fields. 2-4 years of experience in electrical and instrumentation maintenance or related field. Experience working in underground mining, heavy industrial, or process plant environments.

Knowledge of:

PLCs (Allen-Bradley, Siemens, etc.) SCADA systems Industrial networking VFDs and motor controls Electrical testing equipment Ability to use multimeters, megohmmeters, loop calibrators, and diagnostic tools. Strong troubleshooting and problem-solving skills. Ability to work underground in confined spaces and physically demanding conditions. Willingness to work rotating shifts, weekends, and emergency callouts.

Required certificationslicenses:

MSHA Underground Miner certification State or provincial electrical license Instrumentation Technician certification

NFPA 70E

electrical safety training First Aid/CPR certification Arc flash and confined space training Equal Employment Opportunity The Company is an equal employment opportunity employer committed to providing employment opportunities to employees and applicants in accordance with all applicable laws.