What Is MSHA Part 46? Training Requirements, Hours, and Compliance
MSHA Part 46 is the federal training rule for many surface mines that produce nonmetal minerals, including sand, gravel, and stone operations. It sets minimum training requirements for miners and certain other people who work at or visit covered mines. Knowing which training applies, when it is due, and how to document it helps mine operators protect workers and meet federal requirements. Here’s how Part 46 works in practice.
What Is MSHA Part 46?
MSHA Part 46 refers to Title 30 of the Code of Federal Regulations, Part 46, “Training and Retraining of Miners Engaged in Shell Dredging or Employed at Sand, Gravel, Surface Stone, Surface Clay, Colloidal Phosphate, or Shell Dredging Operations.” It establishes minimum safety and health training requirements for miners and specified individuals at covered operations.
The Mine Safety and Health Administration (MSHA), an agency within the U.S. Department of Labor, administers the federal mine safety laws and training rules. Part 46 is separate from Part 48, which covers many other mining operations. The correct regulation depends on the mine and the work being performed—not simply on a job title or the fact that an operation is above ground.
Part 46 applies to the types of surface operations listed in the regulation, as well as certain surface areas of underground mines. Some operations that appear similar may fall under Part 48 or another requirement. Operators should confirm coverage using the regulation and MSHA guidance rather than assume that every surface mine follows Part 46.
Who Needs Part 46 Training?
Part 46 requirements apply to miners at covered operations, including employees of mine operators and, in applicable circumstances, independent contractors. The rule also addresses certain people who are not miners but may be exposed to mine hazards. Their training requirements depend on their duties and the nature of their exposure.
For Part 46 purposes, a miner generally includes people who work at a mine and are engaged in mining operations, including certain maintenance and service work. A contractor’s employer and the mine operator may both have responsibilities to ensure required training is completed. Operators should coordinate before work begins so that training records, task instruction, and site-specific information are not overlooked.
People who visit or perform occasional work at a mine may need site-specific hazard awareness training rather than the full new-miner course. This can include delivery personnel, office staff, vendors, and visitors, depending on their exposure. The operator must determine the applicable requirement based on the individual’s activities and the hazards they may encounter.
MSHA Part 46 Training Requirements At A Glance
| Training type | Minimum requirement | Typical timing |
|---|---|---|
| New miner training | 24 hours | At least 4 hours before work; remaining training generally within 90 days |
| Experienced miner training | 8 hours | Before beginning work at the mine, subject to the regulation’s provisions |
| New-task training | Training appropriate to the task and hazards | Before the miner performs a new task, unless prior training is adequate |
| Annual refresher training | At least 8 hours | Every 12 months |
| Hazard awareness training | Training appropriate to site-specific hazards | Before exposure to mine hazards |
These are minimums, not a complete training curriculum. Training must address applicable hazards and the miner’s work. Operators should consult the current text of 30 CFR Part 46, because details and exceptions depend on individual circumstances.
New Miner Training: 24 Hours
A person who meets the Part 46 definition of a new miner generally must complete 24 hours of new-miner training. At least four hours must be provided before the miner begins work at the mine. The remaining training must generally be completed within 90 days after the miner begins work.
The initial training should prepare the miner to recognize and respond to risks at the operation. Part 46 topics include an introduction to the work environment, procedures for reporting hazards and accidents, emergency procedures, health and safety aspects of assigned tasks, and other required subjects. The operator should tailor examples and instruction to actual equipment, work areas, and mine conditions.
New-miner training is not a substitute for task-specific instruction. A worker may need further training before operating equipment or taking on duties that present hazards the initial course did not address. The 90-day deadline for completing the balance of new-miner training does not mean a miner can perform unfamiliar hazardous work without appropriate instruction in the meantime.
Experienced Miner Training: 8 Hours
Part 46 generally requires eight hours of experienced-miner training for miners who meet the regulation’s definition of an experienced miner and are beginning work at a mine. This training is intended to address the mine’s rules, procedures, hazards, and emergency arrangements, rather than repeat a full new-miner program.
“Experienced miner” is a regulatory category, not an informal description of someone who has worked in mining for a long time. The definition and circumstances matter. Operators should check 30 CFR 46.2 and the applicable provisions in 46.6 when deciding whether this training path applies. If a worker does not qualify as an experienced miner, the new-miner requirements may apply instead.
New-Task Training
Under Part 46, a miner must receive new-task training before performing a task when the miner has not previously performed it and has not received appropriate training. Training should cover the health and safety aspects of the task, including hazards associated with the equipment, materials, work environment, and procedures.
Training may be unnecessary when a competent person determines that the miner’s prior training and experience adequately prepare them for the task. That decision should be grounded in the miner’s actual capabilities and the task’s risks—not convenience alone. If conditions or equipment change in a way that creates new hazards, additional instruction may be appropriate.
For example, an employee who has completed general mine orientation may still need instruction before operating a different type of mobile equipment. A maintenance worker may need task training before servicing unfamiliar machinery or working under a new energy-control procedure. The operator should make sure training is practical, understandable, and completed before the task is undertaken.
Annual Refresher Training
Every miner covered by Part 46 must receive at least eight hours of refresher training every 12 months. The refresher should reinforce safe work practices and address changes in mine conditions, equipment, procedures, and hazards. It is not simply a recurring presentation: useful training connects regulatory topics to real situations at the site.
Part 46 identifies topics that refresher training may need to address, including changes at the mine that could affect health or safety, review of relevant work procedures, and other required safety and health subjects. Operators should plan training around the mine’s risk profile and ensure the full required training time is documented. A training calendar helps prevent missed or overdue refreshers.
Hazard Awareness Training
Hazard awareness training is designed for people who are not required to complete the full miner training program but may be exposed to mine hazards. The operator must provide instruction appropriate to the hazards the person may encounter. It should explain relevant site rules and how to avoid or respond to risks in the areas the individual will access.
Examples can include identifying restricted areas, traffic routes, emergency signals, evacuation procedures, and how to report a hazard. The content should match the person’s expected exposure: a visitor escorted through an office area may face different risks from a delivery driver entering an active loading zone.
Hazard awareness training does not automatically qualify someone to perform mining work or a hazardous task. If a person’s duties change, the operator should reassess whether miner training, task training, or additional site-specific instruction is required.
Part 46 Training Plans
Covered operators must develop and implement a written training plan that meets Part 46 requirements. The plan explains how the operation will provide required training and who is responsible for it. The regulation provides flexibility in how training is delivered, but the plan must be suitable for the mine and its workforce.
Under 30 CFR 46.3, a plan includes information such as the person responsible for health and safety training, the training methods and subjects, how the operator will evaluate training, and where records will be kept. Miners and their representatives must have an opportunity to comment during plan development. The operator must make the plan available to miners and MSHA as required.
Training can take different forms, including classroom instruction, demonstrations, hands-on practice, and site-specific discussions. The method should fit the subject. A hands-on equipment demonstration may be more effective for operating procedures, while a discussion and drill can help workers practice emergency responses.
Part 46 generally does not require an operator to submit its training plan to MSHA for prior approval. However, the plan must satisfy the regulation and be available for review. Operators should consult MSHA’s current guidance for any special circumstances and keep the plan updated when responsibilities, methods, or mine conditions change.
Competent Persons And Training Delivery
Part 46 training must be provided by a competent person. In general, this means someone with the ability, training, and experience to provide instruction on the subject matter. A trainer should understand the topic and be able to explain it clearly, answer questions, and relate it to the mine’s work practices.
Being designated as a competent person does not make every individual qualified to teach every subject. An operator should select instructors based on the content—for example, someone with relevant knowledge of emergency procedures, equipment operation, or hazard controls. Training records and plans should clearly identify the responsible people and how instruction is delivered.
Training Records And Certificates
Documentation is essential to demonstrating Part 46 compliance. Under 30 CFR 46.9, the operator must record required training and provide miners with a certificate of training after they complete applicable training. Records must include the information specified by the regulation, such as the miner’s name, the training date and subject, the duration, the mine’s identifying information, and the competent person’s name and signature.
Operators should maintain records so they can confirm what training a person completed and when. A reliable system tracks new-miner deadlines, annual refresher dates, task training, hazard awareness instruction, and contractor documentation. Workers should receive and retain their certificates, while operators should keep required records accessible at the mine or at the location permitted by the rule.
Incomplete records can create problems even when training took place. A sign-in sheet alone may not capture all required details. After each session, the operator should verify that the training subject, time, instructor, and participant information are recorded accurately and that certificates are issued.
Part 46 And Part 48: What Is The Difference?
Part 46 and Part 48 are different MSHA training programs. Part 46 generally applies to the nonmetal surface operations named in its scope, while Part 48 applies to other categories of mines and operations covered by that regulation. Their requirements, training structures, and administrative procedures are not interchangeable.
Because a mine’s classification can depend on the material produced and the operation involved, a company should not choose a part based only on a familiar industry label. The mine operator should verify its regulatory coverage with MSHA materials or qualified compliance support, particularly when a site has mixed activities or its operations change.
Practical Steps For Staying Compliant
- Confirm the correct regulation. Check whether the operation falls under Part 46, Part 48, or another applicable requirement.
- Classify each person correctly. Determine whether the person is a new miner, experienced miner, contractor, visitor, or other worker requiring hazard awareness training.
- Train before exposure or task assignment. Do not rely on general orientation when a person needs task-specific instruction.
- Track deadlines. Monitor the 90-day new-miner completion period and the 12-month refresher cycle, as applicable.
- Use mine-specific examples. Connect instruction to actual equipment, procedures, emergency arrangements, and hazards.
- Document every session. Complete required records and issue certificates after training.
- Review the plan regularly. Update it when work, mine conditions, training responsibilities, or methods change.
MSHA Part 46 compliance combines the correct training category, timely instruction, a mine-specific training plan, competent instructors, and accurate records. For specific interpretation questions, the controlling authority is the current text of 30 CFR Part 46 on eCFR and the applicable guidance published by MSHA.