- What the Credential Actually Is
- Who Administers the Exam and Where You Sit It
- Exam Format, Timing, and Question Types
- The 13 Official Exam Domains
- Where the Question Counts Concentrate
- Eligibility and the Licensure Pathway
- Scoring and What the Pass Data Shows
- Fees and Registration Mechanics
- Who Hires PE Mining and Mineral Processing Engineers
- Sequencing Your Preparation by Domain
- Frequently Asked Questions
- PE-M&MP is the NCEES Principles and Practice of Engineering exam in Mining and Mineral Processing, a licensure exam rather than a renewable certification.
- The exam has 85 questions across 13 numbered domains, delivered at Pearson VUE centers in one 8 hour 30 minute testing session.
- Mineral Processing: Plant Equipment, Facilities, and Systems carries the largest question range at 9 to 14 questions.
- The NCEES fee is $400 per attempt, and your state board sets eligibility and any separate application fees.
What the Credential Actually Is
PE-M&MP, in the context of this site, stands for Principles and Practice of Engineering - Mining and Mineral Processing. NCEES lists it officially as the PE Mining and Mineral Processing exam. It is the professional-level licensure examination that mining and mineral processing engineers take on the path to becoming a licensed Professional Engineer (PE) in the United States.
That distinction matters. This is not a vendor certificate or a training-completion badge. It is one required step in state-based engineering licensure. Passing the exam does not by itself make you a PE; the licensing board you apply through decides whether you have met its education, experience, and application requirements. If you are comparing it with other exams that happen to share similar initials, note that everything in this article refers only to the NCEES Mining and Mineral Processing exam.
Because it is a licensure exam, there is no separate NCEES renewal cycle for the exam itself. After you are licensed, your issuing state or territorial board sets the renewal period and the continuing professional competency requirements you must satisfy. For a broader orientation to the term, see our explainer on what PE-M&MP is and our page on what PE-M&MP stands for.
Who Administers the Exam and Where You Sit It
The exam is developed and administered by the National Council of Examiners for Engineering and Surveying (NCEES). Testing is delivered by Pearson VUE at approved Pearson test centers. It is a computer-based test, taken in person; remote testing is not part of the picture described in the NCEES materials.
Two scheduling features set this exam apart from many professional exams that offer rolling windows:
- Annual, single-day administration. The exam is offered once per year. The upcoming sitting is scheduled for October 27, 2026.
- One shared question set. All examinees in a given administration receive the same questions, which is the norm for low-volume PE exams.
Because there is only one sitting per year, a missed deadline or a failed attempt costs you a full year, not a few weeks. Review our guide to PE-M&MP exam dates and scheduling before you plan your timeline.
Exam Format, Timing, and Question Types
The numbers at a glance
| Feature | Detail |
|---|---|
| Total questions | 85, including unidentified unscored pretest items |
| Testing time | 8 hours 30 minutes |
| Appointment length | 9 hours 30 minutes |
| Included in appointment | 2-minute nondisclosure agreement, 8-minute tutorial, 50-minute scheduled break |
| Delivery | Computer-based, in person at Pearson VUE |
| Units | SI and USCS |
| Wrong-answer penalty | None |
Question styles you will see
The exam is not limited to classic four-choice items. NCEES uses multiple-choice plus alternative item types, including:
- Multiple-correct (select all that apply)
- Point-and-click (selecting a location on an exhibit)
- Drag-and-drop
- Numerical fill-in (you compute and type the value)
Scored items receive correct or incorrect credit only. There is no partial credit, so a multiple-correct item answered with one wrong selection earns nothing. Since wrong answers are not penalized, you should never leave an item blank.
Closed book, with a supplied handbook
The exam is closed book. You may not bring personal reference materials. Instead, NCEES supplies a searchable electronic reference handbook inside the exam interface, and you are permitted one NCEES-approved calculator. Older Society for Mining, Metallurgy & Exploration (SME) preparation pages may describe an open-book, 80-question, 8-hour exam; the current NCEES specification, effective beginning with the October 2025 examination, takes precedence over that older text.
Another structural point: the exam is delivered in two sections that share the testing clock, and once you submit a section you cannot reopen it. Pacing, and a deliberate decision about when you are truly finished with a section, are real exam skills. Our difficulty guide covers pacing in more depth.
The 13 Official Exam Domains
The NCEES specification organizes the exam into 13 numbered domains. Candidates sometimes assume these collapse into a handful of broad families, but NCEES publishes all 13 individually, each with its own question-count range. The headings below are official exam objectives, not a preparation curriculum, and the example topics listed are illustrative, not exhaustive.
Exploration (Domains 1 to 3)
- Domain 1: Exploration: Methods and Techniques (3 to 5 questions). Think about how geologic targets are found and sampled.
- Domain 2: Exploration: Site Geologic and Geotechnical Conditions (3 to 5 questions). Characterizing the ground you will build on and mine in.
- Domain 3: Exploration: Resources/Reserves (5 to 8 questions). Estimating and classifying resources versus reserves, a topic that ties directly to economics and reporting standards.
Mine Planning/Operations (Domains 4 to 7)
- Domain 4: Mine Planning/Operations: Mining Methods and Layouts (7 to 11 questions). Surface and underground method selection and layout.
- Domain 5: Mine Planning/Operations: Mine Equipment, Facilities, and Systems (8 to 12 questions). Equipment, ventilation, dewatering, power, and other mine systems.
- Domain 6: Mine Planning/Operations: Ground Control (6 to 9 questions). Stability, support, and design of openings and slopes.
- Domain 7: Mine Planning/Operations: Mine Planning and Site Layout (6 to 9 questions). Sequencing, scheduling, and arrangement of the mine site.
Mineral Processing (Domains 8 to 10)
- Domain 8: Mineral Processing: Laboratory/Pilot Testing and Results (4 to 6 questions). Interpreting bench and pilot data.
- Domain 9: Mineral Processing: Process Flow Sheets (6 to 9 questions). Building and balancing flow sheets.
- Domain 10: Mineral Processing: Plant Equipment, Facilities, and Systems (9 to 14 questions). Comminution, separation, dewatering, and the equipment that does the work.
Environment and Reclamation (Domains 11 to 13)
- Domain 11: Environment and Reclamation: Site, Mining, and Processing Characterization/Baseline (3 to 5 questions).
- Domain 12: Environment and Reclamation: Environmental Management Systems (5 to 8 questions).
- Domain 13: Environment and Reclamation: Reclamation Plan and Cost (5 to 8 questions).
General engineering skills, engineering economics and cost management, laws and regulations, and facility construction are cross-domain considerations rather than additional domains. They can surface inside questions from any of the 13. For a deeper walkthrough, see the complete guide to all 13 content areas.
Where the Question Counts Concentrate
NCEES publishes question-count ranges rather than fixed percentage weights, and no percentage weights are published in the specification. Sorting the ranges by upper bound shows where the exam concentrates its attention.
| Domain | Question range |
|---|---|
| 10: Mineral Processing: Plant Equipment, Facilities, and Systems | 9 to 14 |
| 5: Mine Planning/Operations: Mine Equipment, Facilities, and Systems | 8 to 12 |
| 4: Mine Planning/Operations: Mining Methods and Layouts | 7 to 11 |
| 6, 7, 9: Ground Control; Mine Planning and Site Layout; Process Flow Sheets | 6 to 9 each |
| 3, 12, 13: Resources/Reserves; Environmental Management Systems; Reclamation Plan and Cost | 5 to 8 each |
| 8: Laboratory/Pilot Testing and Results | 4 to 6 |
| 1, 2, 11: Exploration Methods; Site Geologic and Geotechnical Conditions; Environmental Baseline | 3 to 5 each |
Two things follow from the ranges. First, plant equipment and mine equipment are the heaviest areas, so shaky fundamentals there are expensive. Second, the exam is deliberately broad: even the smallest domains are worth 3 to 5 questions each, and combined the three exploration domains plus the environmental baseline domain add up to a meaningful share of the test. A candidate who ignores them to polish processing equipment is taking on avoidable risk.
Eligibility and the Licensure Pathway
Exam eligibility is controlled by the licensing board you select, not by NCEES alone. There is no single universal prerequisite list. That said, a common pathway looks like this:
- Earn a bachelor's degree in engineering from an EAC/ABET-accredited program.
- Pass the Fundamentals of Engineering (FE) exam.
- Complete four years of acceptable engineering experience.
- Pass the PE exam in Mining and Mineral Processing.
This is a common route, not a rule that every board applies identically. Some boards allow candidates to sit the exam before finishing the experience requirement; others do not. Confirm directly with your board before you pay any fee. Our requirements guide goes through how to check this.
NCEES also operates a Records program. If you build an NCEES Record for engineering, the application uses five references from U.S.-licensed engineers. This is a separate service and is not a universal prerequisite for sitting the exam; your board's application requirements control.
Scoring and What the Pass Data Shows
NCEES reports results as pass or fail. To pass, your scaled score must meet the NCEES minimum-competence standard. NCEES does not publish a numerical passing score, so you will not find a target such as "70 percent." Raw performance is converted onto a scale, and the standard reflects what a minimally competent practitioner should know. For a fuller explanation, see our page on the PE-M&MP passing score.
The dated pass-rate table NCEES maintains (updated January 2026) shows results from the prior October administration:
| Group | Pass rate | Examinees |
|---|---|---|
| First-time takers | 57% | 47 |
| Repeat takers | 50% | 10 |
Interpret these numbers carefully. The sample sizes are small, which makes year-to-year swings likely, and the data describes the previous October sitting, not the upcoming October 27, 2026 administration. The takeaway is not that the exam is easy or hard, but that a substantial share of examinees do not pass on a given attempt, and that retaking is no guarantee. Read more in our analysis of the PE-M&MP pass rate.
Fees and Registration Mechanics
The NCEES exam fee is $400 per attempt. Separately, your licensing board may charge its own application, evaluation, or licensure fees, and these vary by jurisdiction. Budget for both. Optional preparation spending is on top of that. NCEES sells an official practice exam e-book for $59.95 containing 85 questions with solutions, including alternative item types, based on the October 2025 specifications (104 pages). A published erratum for the practice exam was posted on November 3, 2025, so if you use it, check the errata sheet alongside it.
The usual sequence is to establish eligibility with your board, register with NCEES, pay the exam fee, and schedule your Pearson VUE appointment for the October date once your board approves you. Because approvals can take time, do not leave this until the last weeks. Our cost breakdown lays out the full budget picture.
Who Hires PE Mining and Mineral Processing Engineers
Licensed mining and mineral processing engineers work across the minerals value chain. Typical employers include:
- Mining operating companies, in surface and underground operations covering metals, coal, aggregates, and industrial minerals
- Mineral processing and metallurgical plants
- Engineering and consulting firms that design mines, plants, tailings facilities, and reclamation plans
- Regulatory agencies and environmental consultancies handling permitting and reclamation bonding
- Equipment suppliers and project development groups
The license is most valuable where your work needs to be signed and sealed, such as consulting deliverables, design packages, and some permitting and reclamation work, though specifics depend on your jurisdiction and employer.
On pay, the U.S. Bureau of Labor Statistics reports a median annual wage of $106,220 for mining and geological engineers, including mining safety engineers, as of May 2025. That figure covers the whole occupation. It is not a PE-specific salary and it does not measure a licensure premium, so do not read it as what a license alone adds. We discuss this in the salary guide and weigh it in is the certification worth it. For role-focused detail, see PE-M&MP jobs.
Sequencing Your Preparation by Domain
Generic study advice is easy to find; what is useful here is ordering the work around how this exam is built. Start by taking a diagnostic pass through the practice tests on the main site so you know which domains are weakest, then allocate time in proportion to both your gaps and the question ranges. A reasonable arc for a motivated candidate working a full-time job looks like this:
Baseline and handbook fluency
- Take a diagnostic on the practice test site to expose weak domains.
- Practice searching the electronic reference handbook so lookup speed becomes habit.
- Review SI and USCS unit conversions, since both appear.
The heavy domains first
- Spend the largest block on Domain 10 (plant equipment) and Domain 5 (mine equipment).
- Add Domain 4 (mining methods and layouts) while the equipment context is fresh.
- Work numerical fill-in problems, since there is no partial credit.
Middle-weight domains
- Cover ground control, mine planning and site layout, and process flow sheets (6 to 9 questions each).
- Practice reading flow sheets and balancing them.
- Add resources/reserves and the environmental domains (5 to 8 each), where cost and regulatory reasoning appear.
Small domains and full simulation
- Close gaps in exploration methods, site conditions, lab/pilot testing, and baseline characterization.
- Run at least one full-length timed session to practice pacing across the two sections.
- Rehearse multiple-correct, drag-and-drop, and point-and-click items.
Key Takeaway
Do not skip the low-count domains. At 3 to 5 questions each, exploration and baseline topics are individually small but collectively significant, and they are often where specialists in mining or processing are weakest.
For a complete plan, see the PE-M&MP study guide, and keep the cheat sheet handy for last-week review. For training options, visit our overview of PE-M&MP training. When you are ready to test yourself under realistic conditions, head to the main practice exam site.
Frequently Asked Questions
It is a licensure exam. NCEES administers the PE Mining and Mineral Processing exam, but your state or territorial licensing board grants the PE license and sets renewal and continuing competency rules. There is no separate NCEES renewal for the exam itself.
The exam has 85 questions, including unidentified unscored pretest items. Testing time is 8 hours 30 minutes within a 9 hour 30 minute appointment that also covers an NDA, a tutorial, and a 50-minute scheduled break.
No. The exam is closed book, and personal reference materials are prohibited. You use the searchable electronic reference handbook provided in the exam, plus one NCEES-approved calculator.
The NCEES exam fee is $400 per attempt. Your licensing board may charge separate application fees, and any preparation materials you buy are additional.
NCEES does not publish a numerical passing score. Results are pass or fail based on whether your scaled score meets the NCEES minimum-competence standard, and there is no deduction for wrong answers.
Yes, in practice. Eligibility and any required approval are controlled by the licensing board you select, and requirements vary. Confirm with your board first, since the exam is offered only once a year.
For more detail, explore the full PE-M&MP certification resources, or consult the official NCEES exam page for current logistics and the blueprint. Passing starts with understanding the structure, and the 13-domain breakdown above is the best place to anchor your plan.