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MNE6

Mineman

E-6 (Staff Sergeant) · Navy

E1–E3E-4E-5E-6E-7E8–E9
HEADS UP

MN1 is LPO — you own the section, the mine-warfare readiness metrics, and the Chief packet the LCPO is actively building with you. The Weapons Officer calls you by name before calling the chief on section-level questions. Making Chief is the rate's defining milestone, and the Mineman who makes it is identifiable to the goat locker well before the selection board reads paper.

The Honest MOS Read
Petty Officer First Class Mineman (MN1) is the LPO rank, the Chief board candidate rank, and the rank where the gap between what you are responsible for and what you control is largest. You are the senior enlisted voice in the mine-warfare section — the person the Mine Warfare Officer calls first on a section-level technical or accountability question. The formal LPO title is now yours, and with it comes the full weight of the mine rate's accountability culture at the section level. You run 8-20 Minemen depending on the billet. The AA&E custody record for your entire section — every component, every lot number, every access-list entry — has your name as the senior custodian. A discrepancy anywhere in the section's custody structure is your name at the captain's mast regardless of which MN3 was the last signature on the custody line. The MN1 LPO who has not personally audited the section's custody records recently is the LPO who is surprised at the AA&E inspection, and surprises in this rate are not minor administrative corrections. The mine-warfare readiness metrics — PMS completion percentages, deferred-maintenance count, handling-equipment availability, magazine safety posture, AA&E accountability summary — are yours to own at the maintenance management board. The Weapons Officer and the Mine Warfare Officer expect your numbers to be validated against the 3-M system and the custody record, not compiled from what the MN2s told you. The LPO whose numbers get rewritten at the board because they were not validated against primary sources is the LPO who loses the Mine Warfare Officer's trust in a community where trust is personal and durable. The eEVAL writing load at MN1 is four to six evaluations per cycle, and these are the eEVALs that pick the next advancement slate. The MN2 who reads his eEVAL for the first time at the EVAL review should not be surprised by the ranking — the MN1 who has been giving consistent feedback throughout the year writes eEVALs that reflect the established record. The one who has not had those conversations is writing surprises, and surprised sailors do not trust the process or the LPO. The Chief packet is not a future project — it is happening now. Every eEVAL the Mine Warfare Officer writes on you, every NEC you maintain, every commissioning packet you shepherd through, every mine-warfare inspection your section passes without a senior-enlisted-attributable finding is a brick in the packet the Chief board reads. The LCPO who is actively building your packet with you is one of the most valuable professional relationships in the mine rate. Listen to what he says about the packet's gaps and close them specifically, not generally.
Career Arc
  • 01MN1 pin-on via NWAE advancement and service-record review.
  • 02LPO assignment — mine assembly and maintenance section, magazine and AA&E program, or handling-equipment division; 8-20 Minemen, full section mine-warfare readiness responsibility.
  • 03eEVAL writing load of 4-6 per cycle — the mine rate's advancement slate picks who you write and how.
  • 04Chief board packet in active construction: eEVAL profile, NEC stack, commissioning-packet sponsorship, warfare device, section training output quantified.
  • 05Mine Warfare Command or Type Commander inspection cycle — LPO posture, magazine safety self-assessment, AA&E accountability at LPO standard.
  • 06Commissioning program conversations: LDO Ordnance (621X) or CWO Ordnance — application window timing based on TIS and paygrade eligibility.
  • 07Advancement to MNC (E-7) via Chief selection board — the most competitive and defining milestone in the mine rate.
Common Screwups
  • ×Briefing mine-warfare readiness or AA&E accountability numbers you have not personally validated against the 3-M system and the custody record. The Weapons Officer catches the discrepancy once and your Chief packet feels it permanently — in a community this small, the Mine Warfare Officer tells the Mine Warfare Command staff before the next week is out.
  • ×Letting a senior MN2 carry the magazine custody or the AA&E reconciliation because he is your go-to guy. When he transfers mid-deployment, the gap — a stale access list, an unreconciled component — surfaces under the LPO's name at the next AA&E inspection. There is no recovery argument for 'I trusted someone else to do the accountability job.'
  • ×Treating the magazine and explosives-safety self-assessment as a paperwork drill. The magazine holds live mines. The OPNAVINST 8020.14B finding from a self-assessment you signed without walking is read by the Mine Warfare Command inspection team under your name, and the real risk is measured in lives, not inspection points.
  • ×Going around the LCPO to the Weapons Officer or the XO. The mine-warfare leadership chain runs through the Chief; the CMC hears about it the same watch rotation, and the Chief board packet absorbs the read.
  • ×DUI or financial mismanagement at MN1. The Chief board packet does not survive either. The community is too small for the Mine Warfare Command senior enlisted not to know within weeks.

A Day in the Life

  • 0500-0530Wake. Check overnight command message traffic and any overnight duty-section issues — equipment casualty, custody discrepancy, sailor issue. At MN1, the overnight flag goes to you first, not the LCPO.
  • 0530-0630PT formation. Good Medium floor, higher standard modeled. The LPO who cannot keep pace with the section on PT mornings loses physical credibility in a community where handling-bay work is demanding.
  • 0630-0700Shower, uniform, chow. Check section accountability for the day — leaves, medical appointments affecting work-center staffing.
  • 0700-0730Quarters. LCPO takes section accountability through you. Section priorities for the day are yours to set within the LCPO's guidance — you brief the section on the day's work.
  • 0730-0800Magazine check if required. Walk it yourself — the LPO whose personal magazine walk is a weekly discipline never needs to explain a surprise at the inspection.
  • 0800-1100Main work period. LPO management: monitoring assembly and maintenance actions, reviewing MN3 documentation before QA, fielding technical questions, resolving anomalies the MN2 has brought forward. Brief the Weapons Officer on any shift in mine-warfare readiness before the shift compounds.
  • 1100-1200Lunch. Section training check — verbal status from MN2s on BIB coverage, PQS milestones, NEC pipeline action items. Informal mentoring happens here.
  • 1200-1400Afternoon work. eEVAL counseling if feedback is overdue. Mine-warfare readiness inputs for the maintenance management board validated against primary sources. NEC pipeline conversation with MN2 if in the application window.
  • 1400-1500Administrative work: eEVAL drafts, section training plan update, Chief packet action items. The MN1 who does admin in the afternoon and technical work in the morning does not let the admin pile up until the board year makes it an emergency.
  • 1500-1530Work-center closeout: tool count, 3-M documentation status, work-center cleanup.
  • 1530-1600End-of-day muster. Section accountability. Duty section confirmed.
  • 1600-1800Liberty or duty section.
  • 1800-2100Chief packet work if in board year. Off-cycle: MILPERSMAN reading, mine-warfare policy review, professional development toward MNC-level responsibilities.
  • 2100-2200Close out. On an MCM ship underway, the night watch may begin here.

Weekly Cadence

The MN1 LPO's week is built around the section's assembly schedule, the LCPO's weekly milestones, and the maintenance management board input cycle. Monday is accountability and priority-setting: the LCPO's guidance frames the week, the MN1 translates it to section assignments. Tuesday through Thursday are execution days — assembly and maintenance work, documentation reviewed and submitted to QA, training milestones checked against the plan. Friday closes the week: 3-M documentation closed, board input validated and submitted, section training status updated. When the unit is in a workup or pre-deployment cycle, the coordination load increases significantly. The Weapons Officer tracks section mine-warfare readiness daily. The assembly and handling-evolution tempo increases. Mine Warfare Command or Type Commander inspection preparation intensifies. The LPO who has been maintaining readiness year-round does not need to change the section's behavior during inspection preparation — the inspection finds what the daily routine produced. The Chief board year adds a layer. Packet review with the LCPO is monthly; eEVAL profile review is quarterly. The MN1 who has been building the packet continuously since MN2 does not experience the board year as an emergency. The one who has been coasting experiences it as a deadline they cannot fully meet.

Key Skills — How to Drill Each

  1. 01
    Run a work-center mine-warfare training plan that produces qualified, NEC-progressing, NWAE-advancing MNs without the LCPO tracking every milestone.
    The training plan is the documentation of what you do every week to move the section toward the next milestone. Build it as a live document: PQS completion by sailor, NWAE BIB chapter coverage, NEC pipeline status, warfare device qualification status. Brief the LCPO on training status at the weekly sync without being asked. The LCPO who has to chase training-plan status from the LPO is the LCPO who starts watching the LPO more closely — which is not the dynamic a Chief packet needs.
  2. 02
    Own the unit's AA&E accountability program as the senior custodian — lot-number and component reconciliation, access-list control, custody turnovers, the no-notice spot count — clean at every inspection and self-assessment.
    The LPO's AA&E accountability standard is a personal inspection routine, not a delegation to the MN2. Walk the magazine with the custody record once a week minimum. Audit the access list when any section member transfers, joins, or goes on TAD. Run the no-notice spot count on yourself before the LCPO or Weapons Officer does — if you find the gap first, you fix it and it never becomes an inspection finding.
  3. 03
    Defend the division's mine-warfare readiness metrics — PMS completion, deferred maintenance count, handling-equipment availability, magazine safety posture, AA&E accountability — at maintenance-management-board level without the Weapons Officer rewriting your numbers.
    Validate every number against the primary source before the board. Pull the 3-M system readout, not the MN2's verbal report. The Weapons Officer who catches a discrepancy between your board number and the primary source loses confidence in the LPO who reported it. Rebuild that confidence is measured in quarters, not weeks — and a Chief board period does not have quarters to spare.
  4. 04
    Run the magazine and explosives-safety program to OPNAVINST 8020.14B, NAVSEA OP 4, and NAVSEA OP 5 standard, including the self-assessment the inspection verifies.
    Walk the self-assessment yourself, with the checklist, every cycle the program requires. Do not delegate the self-assessment walk to the MN2. The self-assessment with your signature means you walked it. The Mine Warfare Command inspection team reads the self-assessment posture against the findings they make — if your self-assessment found nothing and they find three items, the self-assessment program is the finding, not just the three items.
  5. 05
    Operate as the senior MN technical voice during a mine-laying or mine countermeasures evolution, a magazine ordnance transfer, or a Type Commander inspection — including the call to brief the department head when the unit's mine-warfare readiness has actually shifted.
    The call to brief the department head is the one that distinguishes the MN1 from the MN2. When the section's mine-warfare readiness shifts — a handling-equipment casualty, a fuzing-system test failure reducing serviceable mine inventory, an AA&E discrepancy — the MN1 brings it to the Weapons Officer before the Weapons Officer has to ask. The LPO who surfaces the shift proactively is managing the mission; the one who waits to be asked is managing appearances.
  6. 06
    Mentor an MN2's NWAE cycle, NEC pipeline packet, or LDO/CWO commissioning packet from idea to selection — and counsel honestly when the path is wrong for the sailor.
    The honest counseling is the LPO's obligation. The MN2 with a history of AA&E discrepancies asking about the LDO Ordnance application needs to hear specifically what needs to change and on what timeline before the application is competitive. The honest version — here is what the board is looking for, here is where your record is, here is what closing those gaps looks like over the next two years — produces the MN2 who is competitive when the window opens and who credits the LPO who told him the truth.

Manuals & References — What Chapters Matter

  • NAVSEA OP-2173 — Mine Assembly and Handling Manual
    At MN1 you are fluent across the technical and safety provisions and you are the authority the Weapons Officer signs behind on work-center discrepancies. The procedure sections govern your section's hands-on work; the safety sections govern the program you run. If a Weapons Officer asks a technical question about a mine system your section handles, the answer should not require a manual lookup — though the manual lookup should happen before any operational decision.
  • OPNAVINST 8000.16 series — Mine Warfare Policy
    You are the LPO voice in every mine-warfare readiness brief. Understanding the policy context makes your contributions more than data points. The Mine Warfare Officer who briefs the CO from your section input is the officer whose credibility depends in part on the LPO who prepared it.
  • OPNAVINST 8020.14B — Navy Explosives Safety Management Program, with NAVSEA OP 4 and NAVSEA OP 5
    The explosives-safety governance you run the magazine and ordnance program inside. At MN1 you defend the self-assessment and the inspection posture at the LPO level; the OPNAVINST 8020.14B checklist is the standard the inspection measures you against. Own it, not the version the MN2 summarized for you.
  • OPNAVINST 5530.13 series — Navy AA&E Physical Security
    Fluent across the custody, access, and accountability provisions at the LPO level. At MN1, the access-list control and custody-record reconciliation provisions are the standards you enforce on every MN in the section. Cite by provision number when counseling a sailor on an accountability issue.
  • OPNAVINST 4790.4 series — Ships' 3-M Systems Procedures Manual
    Fluent across QA, tool control, and maintenance documentation provisions you enforce at the LPO level. The QA return the Weapons Officer asks you about is the one you should have caught before QA saw it — fluency with what QA is looking for is the standard you enforce on your MN2s.
  • NAVPERS 18068 Vol II and the current NEC source-rating NAVADMIN, and MILPERSMAN articles on enlisted promotions, retention, separation, and NJP
    At MN1 you are in the room for the conversations that happen at LPO visibility — NJP counseling, retention counseling, separation counseling, NEC pipeline advising. Know the MILPERSMAN articles that apply. The LPO who cites chapter and article when counseling a sailor is the LPO the sailor takes seriously.

Standards — How to Hit Each

  • Chief board packet under construction with the LCPO's eye on every line; eEVAL profile defensible at department head and CO level; warfare device pinned and current.
    The packet review with the LCPO should happen quarterly, not at board year. Pull your eEVAL profile printout, the NEC documentation, the commissioning-packet sponsorship record, the warfare device certification, and the AA&E accountability and inspection history. Ask the LCPO specifically where the gaps are. The MN1 who shows up to the packet review with a complete picture and asks pointed questions gets pointed answers.
  • AA&E accountability posture, magazine safety self-assessment, and handling-equipment readiness defensible at Weapons Officer and CO level every cycle — no caveats — because one unreconciled mine component erases everything else on the record.
    The no-caveats standard means the Weapons Officer or CO can ask the LPO to defend the accountability posture at any time without advance notice. Build the records to be defensible on demand: custody record current, access list current, self-assessment walked and documented, handling-equipment readiness validated against the 3-M system.
  • Work-center QA rework rate defensible at command level every cycle.
    Pull the QA metrics and compare your section to command average quarterly. If the section is above average, find the specific source — MN3 documentation quality, MRC interpretation, signature-chain gaps — and address it in the section training plan.
  • Advanced NEC maintained and current; verify currency requirements against the current source-rating NAVADMIN.
    NEC currency matters at MN1 for the Chief board and for eEVAL differentiation. The source-rating NAVADMIN specifies which NECs have currency requirements — pull the current version, not the one printed two years ago.
  • Pipeline output — advanced NEC, commissioning, federal civilian or defense-contractor ordnance path — producing at least one selectee or completion per year from your work center.
    The pipeline output is the training plan's measurable outcome. If the section has not produced a selectee or completion in the current evaluation period, ask the LCPO which result the Chief board reads as a gap and close it specifically.

Technical Mistakes — Concrete Consequences

  • Briefing mine-warfare readiness or AA&E accountability numbers you have not personally validated against the 3-M system and the custody record.
    The Weapons Officer catches the discrepancy between your brief number and the primary source once and your credibility as the senior technical voice erodes permanently. In a community this small, the Mine Warfare Officer's read of the LPO propagates to the Mine Warfare Command senior staff within weeks.
  • Letting a senior MN2 carry the magazine custody or the AA&E reconciliation without personal audit.
    When the MN2 transfers or goes on TAD and the replacement inherits a custody record that has not been personally audited by the LPO in months, the gap becomes visible at the next inventory. The investigation traces to the last LPO signature on the custody review. There is no 'he was my guy' defense in the JAGMAN investigation.
  • Signing a magazine safety self-assessment without walking it.
    The Mine Warfare Command inspection team that finds a discrepancy the self-assessment missed reads the signed self-assessment as either negligent or falsified. Either read produces a serious finding under the LPO's name. The real risk — a magazine safety failure in a live-mines storage environment — is measured in a different unit than inspection points.
  • Going around the LCPO to the Weapons Officer or XO.
    The MNC hears about it the same watch rotation. The Weapons Officer sends the answer back through the Chief anyway. The Chief board reads the pattern — the petty officer who does not work inside the chain is the petty officer the board is not confident will build the chain correctly as a Chief.
  • Confusing seniority with current technical depth on a new mine type or a fuze baseline upgrade.
    The MN2 just off C-school may know the new configuration better than the MN1 who attended three years ago. The LPO who admits the gap and lets the MN2 brief the new baseline earns technical credibility. The one who bluffs through the brief creates a technical authority vacuum the Mine Warfare Officer fills by going directly to the MN2 — which is the functional demotion of the LPO in all but title.

Career Decisions at This Rank

  • Chief board packet timing and readiness: apply this year or wait for a stronger record
    The LCPO is the right source for this assessment — not a peer MN1 who is guessing. The Chief board for the mine rate reads a small pool; what is competitive is specific. An eEVAL profile with no Early Promote marks in three years, a lapsed NEC currency, and no commissioning-packet sponsorship output is not competitive regardless of time in rate. Go into the board-year conversation with the LCPO with a candid self-assessment; the LCPO who tells you to wait a year and says why is doing you a service.
  • LDO Ordnance (621X) or CWO Ordnance application vs. continuing the enlisted career
    The LDO and CWO applications are competitive and the mine rate's small community means the applicant pool is small, which cuts both ways. LDO Ordnance leads to department head, XO, and CO billets in mine warfare commands. The CWO path is technically deeper and operationally narrower. The enlisted Chief path provides the goat-locker influence and deckplate leadership platform some Minemen find more meaningful than the officer track. The decision turns on what the sailor wants to do day-to-day. Get candid input from an MNC who has seen both options from the chief's mess perspective.
  • Instructor duty at CEODD Yorktown vs. operational LPO tour for the Chief packet
    Instructor duty at the mine warfare schoolhouse is a credential the Chief board reads positively — it demonstrates the ability to teach foundational rate material and contributes to the community's pipeline. The tradeoff is reduced operational exposure during a board year. The LCPO and Mine Warfare Command senior enlisted can advise on whether the specific record needs another operational tour or benefits more from the schoolhouse credential. Do not make this decision without that input.

How the Seat Varies by Unit Type

  • MCM Ship LPO
    MN1 LPO on an MCM ship runs a small section in direct support of an operationally deployed mine-warfare mission. The Weapons Officer, XO, and CO all know the LPO personally within weeks. Sea-duty credit and the operational mine-warfare credential on the Chief board packet are genuine advantages. The small ship means the section's accountability and readiness are visible to the wardroom at a level that does not exist on a larger combatant.
  • MINWARCOM Shore Detachment or Mine Assembly Facility LPO
    The LPO section is larger and the Mine Warfare Command and Type Commander inspection pressure is more structured and frequent. The technical depth of the work is at the production level — mines assembled, tested, and certified for operational employment. The senior-enlisted density means more mentorship access and more eEVAL competition.
  • Instructor LPO at CEODD Yorktown
    The LPO instructor runs the instructional evolution for a class of MNFNs and MN3s, maintaining technical depth on foundational mine-rate material while building the next generation of Minemen. The operational pace is different, but the Chief board reads the schoolhouse credential as a community contribution the Mine Warfare Command values.

What Good Looks Like at This Rank

The good MN1 is the LPO the LCPO trusts to run the mine section through a deployment without daily check-ins, because the section's mine-warfare readiness, AA&E accountability, and magazine safety posture are products of a daily discipline that does not require the chief's supervision to maintain. The Mine Warfare Officer's weekly brief pulls the LPO's section input without editing it, because the numbers were validated against the 3-M system before they were reported. The monthly AA&E inspection finds a custody record that reconciles to lot number, an access list that reflects the current section composition, and a self-assessment that matches the physical state of the magazine. The section training output is visible without the LCPO asking: the MN3s are advancing on schedule, the MN2s have NEC packets in pipeline, at least one LDO or CWO ordnance application came out of the section in the last evaluation period, and the eEVALs the MN1 writes reflect the actual ranking the sailors earned. The sailors in the section know where they stand relative to each other and relative to the advancement standard because the MN1 has been having those conversations throughout the year. The Chief packet is not a hope at this point — it is a documented record. The LCPO can walk through it component by component and identify what is competitive and what needs closing. The MN1 who has been building the record since MN2, listening to the LCPO's packet feedback, and closing gaps specifically rather than generally arrives at the board year with a packet that speaks for itself. The Mine Warfare Officer's recommendation letter is unequivocal because the evaluation period record is unequivocal.

Preview — The Next Rank

Making Chief is the mine rate's defining milestone. Every Mineman in the community knows the list of people who hold the gold-fouled anchors, and the list is short. When you pin MNC, the job changes more than at any other promotion in the rate. The LPO role at MN1 was about running your section. The Chief runs the goat locker, owns the enlisted mine-warfare execution posture at the command level, and is the senior enlisted authority on every mine, every magazine, and every handling evolution the command conducts. The LCPO role at MNC is not a bigger version of the LPO role at MN1 — it is a different job. You are no longer the senior technician who resolves the anomaly; you are the leader who built the section the MN2 resolves the anomaly in. The shift from doing to building is the primary adjustment at MNC, and the Minemen who struggle with it are the ones who stay technically immersed at the expense of the leadership and mentoring work the rating depends on at the Chief level. The goat locker is now your professional environment. The Chief's Mess culture in a small rating is direct — there is no large community to absorb a Chief who does not perform. The senior Minemen in the mess watch whether the new MNC's rigor in the magazine and the handling bay matches his posture in the mess, and the answer is known before the end of the first month.
FAQ

MN E6 — Frequently Asked Questions

Q01What does a E6 MN (Mineman) actually do?
You are LPO of the mine assembly and maintenance section, the magazine and AA&E program, or the handling-equipment division — running 8-20 Minemen and owning the unit's mine-warfare readiness and ordnance accountability from the deckplate up.
Q02What's the most important thing to know as a E6 MN?
MN1 is LPO — you own the section, the mine-warfare readiness metrics, and the Chief packet the LCPO is actively building with you.
Q03What does a typical day look like for a E6 MN?
Time-blocked day at the E6 MN rank tier: 0500-0530 Wake. Check overnight command message traffic and any overnight duty-section issues — equipment casualty, custody discrepancy, sailor issue. At MN1, the overnight flag goes to you first, not the LCPO, 0530-0630 PT formation. Good Medium floor, higher standard modeled. The LPO who cannot keep pace with the section on PT mornings loses physical credibility in a community where handling-bay work is demanding, 0630-0700 Shower, uniform, chow. Check section accountability for the day — leaves, medical appointments affecting work-center staffing,…
Q04What mistakes get E6 MN soldiers fired or relieved?
Briefing mine-warfare readiness or AA&E accountability numbers you have not personally validated against the 3-M system and the custody record. The Weapons Officer catches the discrepancy once and your Chief packet feels it permanently — in a community this small, the Mine Warfare Officer tells the Mine Warfare Command staff before the next week is out; Letting a senior MN2 carry the magazine custody or the AA&E reconciliation because he is your go-to guy. When he transfers mid-deployment,…
Q05What career decisions matter most at the E6 MN rank tier?
Chief board packet timing and readiness: apply this year or wait for a stronger record — The LCPO is the right source for this assessment — not a peer MN1 who is guessing. The Chief board for the mine rate reads a small pool; what is competitive is specific. An eEVAL profile with no Early Promote marks in three years, a lapsed NEC currency, and no commissioning-packet sponsorship output is not competitive regardless of time in rate. Go into the board-year conversation with the LCPO with a candid self-assessment; the LCPO who tells you to wait a year and says why is doing you a service;…
Q06What's next after E6 for a MN (Mineman) in the Navy?
Making Chief is the mine rate's defining milestone.
Q07What manuals and regulations does a E6 MN need to know cold?
NAVSEA OP-2173 — Mine Assembly and Handling Manual; you are fluent across the technical and safety provisions and you are the authority the Weapons Officer signs behind on work-center discrepancies.; OPNAVINST 8000.16 series — Mine Warfare Policy; you are the LPO voice in every mine-warfare readiness brief.; OPNAVINST 8020.14B — Navy Explosives Safety Management Program, with NAVSEA OP 4 and NAVSEA OP 5; the explosives-safety governance you run the magazine and ordnance program inside.

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Published by the Honest MOS Editorial DeskVerified against DoD/.gov sourcesUpdated May 2026Editorial standards