Gravel Sorter (Extraction Site)
じゃりせんべつこう（さいしゅじょう）
Industry & Occupation
Classification
Summary
Gravel sorters classify gravel excavated at extraction sites by size and quality using sieves or conveyors, and remove impurities to ensure the quality of construction aggregates.
Description
Gravel sorters are specialized technicians who classify raw stones mined at extraction sites by grain size using vibrating sieves (screens) or conveyors, and manually remove impurities such as small stones, debris, and soil clods. They collaborate with heavy equipment operators to supply appropriately sized gravel to sites, while also inspecting and adjusting lines to ensure safety and hygiene. The job involves long hours in outdoor environments with dust and noise, requiring physical stamina and precise visual inspection skills.
Future Outlook
With stable increases in infrastructure development and civil engineering demand, a certain number of job openings are expected, but the adoption of automatic sorting machines is advancing, with a trend toward requiring proficiency in machine operation and multiple tasks.
Personality Traits
Dexterous hands, good at detailed work / Good team player / Patient / Physically strong
Work Style
Contract employee / Full-time / Outdoor work / Permanent employee / Shift work
Career Path
Gravel Sorter → Site Work Leader → Extraction Site Supervisor → Civil Engineering Construction Manager
Required Skills
Quality Control (Grain Size Inspection) / Safety and Health Knowledge / Screen and Conveyor Equipment Operation / Sorting Techniques
Recommended Skills
Basic Knowledge of Civil Engineering Construction Management / Construction Vehicle Operation / Forklift Operation Skills / Slinging Skills
Aptitudes (Strengths Preferred)
| Item | Description |
|---|---|
| Attention to Detail & Accuracy | High attention to detail is needed to not miss differences in grain size or foreign objects. |
| Physical Stamina & Endurance | High physical stamina is required for lifting heavy gravel or standing for long periods. |
| Stress Tolerance | Necessary to endure stress from long hours of outdoor work amid noise and dust. |
Aptitudes (Weaknesses Acceptable)
| Item | Description |
|---|---|
| Analytical & Logical Thinking | The work is routinized and does not require advanced analysis. |
| Creativity & Ideation | The work follows set standards and does not require much originality. |
| Initiative & Leadership | Work proceeds according to procedures, so compliance with instructions is emphasized over autonomy. |
| Numerical & Quantitative Analysis | Quantity calculations are simple and do not require advanced mathematical skills. |
Related Qualifications
- Construction Vehicle Operation Training
- Forklift Operation Training
- Slinging Skills Training
Related Jobs
- Civil Engineering Laborer
- Gravel Transporter
- Heavy Equipment Operator
- Quarry Worker