Position Overview

The Industrial Hygienist (IH) leads the site’s Industrial Hygiene program for an underground lead‑zinc‑silver operation and associated surface facilities (mill, filter plant, and paste plant). This role plans and executes IH monitoring and controls; ensures compliance with MSHA and OSHA regulations; supports employee training; and partners with operations, maintenance, processing, and leadership to anticipate, recognize, evaluate, and control health hazards. The IH will also support the site’s drug & alcohol program, respirator fit testing, ergonomics, and incident investigation/mitigation activities.

Duties & Responsibilities

Program Leadership & Compliance

Own the development, implementation, and continuous improvement of the site IH Program, aligning with MSHA (30 CFR) and applicable OSHA (29 CFR) regulations, as well as company policies and industry best practices.

Maintain and update the site IH Written Plan(s), procedures, and annual objectives; coordinate with Mine, Mill, Paste/Backfill, and Maintenance leadership for effective execution.

Serve as the subject‑matter expert for exposure assessment, controls selection, and hazard communication.

Exposure Assessment & Sampling

Plan and perform IH monitoring for airborne contaminants (e.g., respirable dust, silica, diesel particulate, welding fumes, metals), gases/vapors, and physical agents (e.g., noise, heat/cold stress).

Conduct personal and area sampling underground and in surface facilities (mill, filter plant, paste plant), using validated methods and calibrated instruments.

Analyze sampling data, compare it to regulatory and internal limits, and prepare actionable reports with control recommendations.

Maintain chain‑of‑custody, analytical lab coordination, data management, and documentation.

Controls, Ventilation & Engineering Support

Recommend and verify effectiveness of engineering/administrative controls and PPE to reduce exposures below applicable limits.

Collaborate with Mine Engineering and Ventilation teams on airflow, dust control, DPM reduction, local exhaust, and auxiliary ventilation effectiveness in production, development, and maintenance areas.

Support housekeeping, wet methods, suppression systems, and process enclosure improvements.

Respiratory Protection & Fit Testing

Administer the Respiratory Protection Program (selection, medical clearance coordination, fit testing, use, care, storage).

Conduct qualitative/quantitative fit testing; maintain required records and corrective actions.

Train employees and supervisors on proper respirator use and limitations.

Noise, Ergonomics & Physical Agents

Lead the Hearing Conservation Program (noise surveys/dosimetry, audiometric tracking liaison, controls, training).

Perform ergonomic assessments for office and field tasks; recommend practical, low‑cost solutions and equipment adjustments to reduce MSD risks.

Assess additional physical agents (vibration, thermal stress, illumination) and implement controls and training as needed.

Chemical Management & Hazard Communication

Maintain the chemical inventory/SDS system; review new product approvals; assist with safe handling, storage, and labeling.

Develop and deliver Hazard Communication training and toolbox talks; verify understanding and compliance in the field.

Drug & Alcohol (D&A) Program

Support the site Drug & Alcohol program administration (policy communication, testing logistics with third‑party providers, documentation, trending, and confidentiality).

Coach supervisors on reasonable suspicion processes and documentation requirements.

Training & Communication

Develop and deliver IH‑related training for new hires and experienced employees (annual refreshers, task‑specific instruction, changes in controls/PPE).

Create concise reports, dashboards, and safety alerts; communicate findings and corrective actions to leaders and crews.

Incident Investigation & Mitigation

Participate in accident/incident and near‑miss investigations for health‑related issues (e.g., suspected overexposures, suspected occupational illness, hearing threshold shifts).

Conduct root‑cause analyses and track corrective and preventive actions to closure; verify effectiveness.

Recordkeeping & Reporting

Maintain complete and accurate IH records (sampling plans, results, calibration logs, training, fit tests, corrective actions) in accordance with MSHA/OSHA and company requirements.

Prepare IH metrics and present at leadership meetings; support required regulatory reporting.

Position Requirements

Bachelor’s degree in industrial Hygiene, Occupational Health & Safety, Environmental Health, or related STEM field; or equivalent combination of education and relevant IH experience.

3+ years of IH experience in mining, heavy industry, or process manufacturing (underground hard‑rock preferred).

Demonstrated proficiency with air/dust/noise sampling methods and IH instrumentation; ability to interpret analytical results and regulations.

Working knowledge of MSHA (metal/nonmetal) and OSHA requirements applicable to IH, respiratory protection, hearing conservation, hazard communication, and recordkeeping.

Strong communication skills: able to train diverse audiences and collaborate across departments.

Valid driver’s license: ability to work underground and on rotating schedules as required.

Preferred Skills & Experience

CIH (Certified Industrial Hygienist) or progress toward certification.

Experience with underground mine ventilation concepts, diesel particulate controls, and silica/dust mitigation.

Experience administering Respiratory Protection and Hearing Conservation programs.

Familiarity with ergonomics in mining/processing environments and office settings.

Proficiency with IH data systems and Microsoft 365 (Excel, SharePoint, Teams, Power BI).

Physical Requirements

Regularly work underground and at surface facilities (mill, filter plant, paste plant) with exposure to varying temperatures, humidity, noise, dust, and confined spaces.

Wear required PPE, including respirators; pass fit testing and medical evaluations associated with respirator use.

Walk on uneven surfaces; climb ladders/stairs; lift and carry up to 40 lbs.

Workdays may include off‑shift, weekends, and on‑call rotations to support operations and emergencies.

About Us

Bunker Hill Mine is a historic underground silver-lead-zinc operation located in Kellogg, Idaho, at the heart of the Silver Valley. With more than a century of mining heritage, Bunker Hill has played a foundational role in the region. Today, we are focused on building its future.

Operated by Bunker Hill Mining Company, the mine is being revitalized through modern engineering, advanced technology, and best-in-class safety and environmental practices. Guided by experienced leadership, strong values, and a clear vision, we are creating a responsible and sustainable operation for the long term. Joining our team means being part of an exciting restart—helping to build a safe, high-performing operation and shaping the next generation of responsible mining in the Silver Valley.

Our success is driven by the values we live in every day. We empower our people to behave like an owner and act with a sense of urgency while doing things safely. We assume good intent, expect every employee to be a team player, and hold one another accountable while treating others with respect and kindness. We are committed to continuous improvement and delivering results—supporting our community, advancing responsible mining, and providing our employees with a best-in-class work environment.

Join Our Team!

If interested, apply today! Our team will review your information and contact you via email if your skills and experience are aligned with what we are looking for at this time.

Bunker Hill Mining Company is an Equal Opportunity Employer and is committed to providing a workplace free from discrimination and harassment. We consider all qualified applicants and make employment decisions without regard to race, color, religion, sex, sexual orientation, gender identity or expression, national origin, age, disability, genetic information, pregnancy, protected veteran status, or any other status protected by applicable federal, Idaho state, or local laws. Reasonable accommodation is available for qualified individuals with disabilities and protected veterans during the application and hiring process.