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Army MOS Career Guide

12G — Quarrying Specialist:
Civilian Career Guide

A 12G is a National Guard-only, ACASP-designated quarry and aggregate specialty. Civilian value comes from crushing, screening, washing plants, rock drills, borehole loading, non-electric firing circuits, aggregate production, plant setup, quarry layout, PMCS, and safety around explosives. Civilian blasting authority still requires state and employer controls.

Equipment operators median: $58,320
Construction managers median: $106,980
National Guard-only and ACASP-designated MOS
Army Chapter 10C note
Army Chapter 10C identifies 12G as Quarrying Specialist, National Guard only and ACASP-designated. Duties include operating electric, pneumatic, and internal combustion machines for drilling, crushing, grading, and washing aggregate; blasting rock in quarries and construction sites; PMCS; assembling, adjusting, calibrating, and operating crushing, screening, and washing plants; operating rock drills; loading boreholes with explosives; assembling nonelectric firing circuits; supervising rock production; directing crushed, washed, and graded aggregate production; subsurface demolition planning; quarry layout; and plant setup.
Transition Reality Check
Your 12G experience becomes stronger when it is translated into civilian construction, safety, and project language.

CommandPath separates military engineer tasks from civilian license, union, apprenticeship, safety, commercial driving, or project-management requirements. The goal is to show the value without pretending the MOS automatically grants a civilian credential.

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Section 01

Top Civilian Role Matches for 12G

Quarry / Aggregate Plant Operator Direct plant match
$40k – $101k

This is the direct civilian bridge for 12G experience. Crushing, screening, washing, grading, calibration, PMCS, production flow, plant setup, rock drills, conveyors, and aggregate quality all map to quarry and construction materials operations. Employers want reliability, safety, mechanical troubleshooting, production targets, lockout/tagout awareness, dust control, and MSHA-aligned habits. Quantify tons produced, plant uptime, equipment maintained, and safety results.

AggregatePlant opsCrushingScreening
Equipment operator growth 4%
Source: BLS OOH: Construction Equipment Operators · Median $58,320 (May 2024)
Drilling and Blasting Support Technician
$45k – $110k

12G includes borehole loading, rock drills, nonelectric firing circuits, and explosive rock excavation, but civilian blasting is tightly controlled. This path fits Soldiers who can support licensed blasters, drill patterns, site prep, exclusion zones, stemming, inventory control, and blast documentation. Do not imply civilian blaster authority without state license and employer authorization.

DrillingBlast supportBoreholesSafety
Blasting work is license controlled
Source: BLS OOH: Construction Equipment Operators · Median $58,320 (May 2024)
Heavy Equipment Operator
$40k – $100k

Quarry work often overlaps with loaders, excavators, dozers, haul trucks, crushers, screens, and support equipment. 12G Soldiers can target heavy equipment roles if they document equipment, hours, PMCS, production work, and safety. CDL, MSHA, union, or employer qualification may be required depending on site.

LoadersDozersHaul trucksPMCS
Equipment roles vary by site
Source: BLS OOH: Construction Equipment Operators · Median $58,320 (May 2024)
Construction Materials / Quality Control Technician
$42k – $91k

Crushed, washed, and graded aggregate production can support construction materials testing and QC roles. This path becomes stronger with soils, aggregate, asphalt, or concrete testing credentials. Translate military aggregate work into gradation, material handling, sampling support, production documentation, plant calibration, and quality checks.

MaterialsQCGradationSampling
Civil materials roles support infrastructure
Source: BLS OOH: Civil Engineers · Median $99,590 (May 2024)
Quarry Foreman / Production Supervisor
$58k – $120k

Experienced 12G Soldiers who supervised plant setup, rock production, quarry layout, drilling, blasting support, PMCS, and safety can target foreman or production supervisor roles. Civilian employers want production planning, crew scheduling, maintenance coordination, MSHA safety, environmental awareness, inventory, and downtime reduction. Lead with production metrics, safety, and equipment reliability.

ForemanProductionMSHAMaintenance
Supervisors earn more with plant scale
Source: BLS OOH: Construction Managers · Median $106,980 (May 2024)
Section 02

Transferable Strengths: What Quarry Employers Actually See

Aggregate Production Knowledge
Crushing, screening, washing, grading, and plant calibration are direct quarry language. Name the plant process, production role, equipment, and quality controls.
Mechanical Readiness
PMCS, assembly, adjustment, calibration, and equipment operation matter because plant downtime is expensive. Employers value operators who prevent failures and document issues.
Drilling and Blast Support Discipline
Rock drills, borehole loading, firing circuits, and blast safety are valuable when framed as support under licensed authority and strict safety controls.
Plant Layout and Production Planning
Supervising rock production, quarry layout, and plant setup translates to foreman-track thinking. Show planning, sequencing, output, and safety coordination.
ACASP Civilian Skills Link
The MOS is ACASP-designated, so civilian quarry skills are baked into the pathway. That strengthens the case for aggregate and plant roles.
Section 03

Common Mistakes 12Gs Make in the Civilian Job Search

01
Not Explaining That 12G Is National Guard Only
Employers do not need that detail, but military readers may. On the resume, focus on quarry skills. In planning, remember the MOS is Guard-only and ACASP-designated.
02
Overclaiming Blaster Authority
Civilian blasting requires state licensing, employer authorization, and strict regulatory compliance. Use drilling and blasting support language unless licensed.
03
Leaving Production Metrics Out
Quarry employers care about uptime, tons, gradation, equipment, downtime, safety, and maintenance. Without production metrics, 12G experience sounds generic.
Section 04

Certifications and Bridges That Matter for 12G

MSHA New Miner / Part 46 or Part 48 Training
Cost Varies by provider or employerTime New miner training usually 24 hours or moreFormat Mine safety training

MSHA training is often required for quarry and aggregate sites. Employers may provide it, but knowing the requirement helps you target roles correctly.

Best quarry safety bridge · Helps with aggregate site onboarding
OSHA 30-Hour Construction
Cost Varies by authorized trainerTime 30 hoursFormat Authorized outreach course

OSHA Outreach supports construction materials and plant leadership roles, especially where quarry work intersects with construction sites.

Safety bridge · Useful for foreman and site support roles
State Blaster License Pathway
Cost Varies by stateTime Experience, exam, and background rules varyFormat State-controlled license or permit

OSMRE blaster certification resources can help identify state expectations. Military explosive experience does not automatically grant civilian blaster authority.

Blast career bridge · Required for independent blasting responsibility
Section 05

Resume Translation: From Quarrying Specialist to Aggregate Operations

The 12G resume should sound like plant production, equipment readiness, and quarry safety.

Before: Vague military language that undersells your scope
Operated quarry equipment, drilled rock, used explosives, ran crushing plant, and produced aggregate for construction projects.
After: Civilian construction language that gets callbacks
Operated and maintained crushing, screening, washing, drilling, and aggregate production equipment supporting construction material production. Performed PMCS, plant assembly, adjustment, calibration, startup checks, production monitoring, equipment troubleshooting, and safety procedures for rock crushing, washing, grading, and material handling operations. Supported drilling and blasting operations by operating rock drills, loading boreholes under supervision, assembling nonelectric firing circuits, maintaining exclusion and safety controls, and documenting production requirements. Assisted with quarry layout, plant setup, crushed aggregate production, maintenance coordination, and crew safety in physically demanding field environments.
Translation Formula
"Crusher" -> "crushing, screening, washing, grading, calibration, and production monitoring"
"PMCS" -> "preventive maintenance, inspections, troubleshooting, and downtime prevention"
"Explosives" -> "drilling and blasting support under licensed or supervised controls"
"Aggregate" -> "material production, gradation, plant flow, quality checks, and inventory support"
"Supervised" -> "crew direction, plant setup, quarry layout, safety controls, and production targets"
Always quantify: tons, plant uptime, equipment, drills, boreholes, crews, safety record, maintenance, and production targets
Last updated June 2026 using Army Chapter 10C MOS 12G page 31, BLS Construction Equipment Operators wage data, BLS Civil Engineers wage data, and BLS Construction Managers wage data. Credential details referenced MSHA training resources, OSHA Outreach Training, and OSMRE blaster certification resources.
Section 06

12G Civilian Career FAQs

Is 12G an active-duty Army MOS?
The Army Chapter 10C entry identifies 12G as National Guard only and ACASP-designated. Civilian translation should focus on quarry, aggregate, plant, equipment, and safety skills.
What civilian jobs fit 12G best?
Quarry plant operator, aggregate production technician, drilling and blasting support, heavy equipment operator, construction materials technician, and quarry foreman roles fit best.
Does 12G experience make someone a civilian blaster?
No. Civilian blasting is controlled by state licensing and employer authorization. 12G experience can support the pathway, but it does not replace civilian requirements.
What should 12G Soldiers quantify?
Quantify tons produced, plant uptime, equipment operated, PMCS completed, boreholes loaded, drills used, safety incidents avoided, crews supervised, and production targets met.
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