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17 jobs found.
On-site Mixed Concrete Manufacturing Worker
Specialized occupation that mixes cement, sand, gravel, and water in appropriate proportions on construction sites to manufacture and supply concrete. Performs quality control and slump checks to support placement work.
Aggregate Extractor
Worker who extracts aggregates (gravel, sand, clay, etc.) used in concrete and paving materials, and handles crushing, sorting, and transportation.
Crusher Operator (Quarrying, Crushed Stone Operations)
Worker who mines and crushes rocks in a quarry to produce crushed stone products.
Material Batching Operator (Ready-Mixed Concrete Manufacturing)
This occupation manufactures ready-mixed concrete by batching cement, aggregates, water, admixtures, etc., in appropriate proportions and managing quality.
Gravel Transport Ship Captain
The captain of a gravel transport ship is a profession that handles ship operation, navigation planning, supervision of cargo handling, and more, to safely and efficiently transport bulk cargo such as gravel mainly in coastal waters.
Gravel Extraction Machinery Operator
An occupation that operates and drives construction machinery to extract gravel and sand from riverbeds or quarries, performing excavation, loading, and leveling.
Gravel Extraction Machine Operator (Gravel Extraction Ship)
This occupation involves operating extraction machines mounted on gravel extraction ships to excavate and recover gravel from the bottoms of rivers and lakes.
Gravel Extraction Worker
A worker who uses heavy machinery in rivers, quarries, etc., to extract and transport gravel, supplying it as construction materials.
Gravel Extraction Ship Assistant
Assists with operations on gravel extraction ships operating in rivers and lakes under the captain's instructions, handling machine operations, cargo handling, navigation support, safety management, etc.
Gravel Sorter (Extraction Site)
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.