Mining and mineral processing plant operators

How to become a cement, stone and other mineral products machine operator

Official title: Cement, stone and other mineral products machine operators

Also called: Cast-concrete products machine operator, Cast-stone products machine operator, Concrete finishing machine opeerator, Concrete production machine operator, Industrial diamond polishing machine operator, Stone polishing machine operator

Cement, stone and other mineral products machine operators monitor and operate machines for manufacturing and finishing precast concrete, bitumen and stone products, and making cast stone for building purposes.

Main tasks

Operating extrusion, moulding, mixing, pumping, compacting, grinding and cutting machinery to manufacture and finish precast concrete and stone products
Operating plant to produce cement, lime and clinker, including loading and unloading ingredients and operating continuous feed equipment such as pumps and conveyors
Operating plant and machines which weigh and mix sand, gravel, cement, water and other ingredients to make concrete
Operating plant and machinery which assemble and fill moulds with concrete and artificial stone mixtures, remove castings from moulds and finish surfaces of precast products
Cutting, grinding, drilling, sandblasting and polishing concrete products and stone blocks, slabs and products to the specifications for the job
Checking production plans and specifications to determine and select materials, ingredients, procedures, components, settings and adjustments for extrusion, moulding, mixing and compacting machines
Monitoring plant and machines during operation by observing instruments such as temperature and pressure gauges, adjusting controls and reporting malfunctions as necessary
Collecting and examining samples of mixtures and finished products for conformity with specifications and adjusting machine settings accordingly
Checking and maintaining production records, including information about quantities, dimensions and types of materials and goods produced
Arranging and assisting with plant and machinery maintenance and repair

Pay · Outlook · AI and this job

Median pay: HK$20,000 a month
About 387,500 people in 2025, and about 403,200 projected by 2028. (+4.1%)
Generative AI can do relatively little of this work, by the ILO's global estimate.

Questions people ask

Do you need a degree to become a cement, stone and other mineral products machine operator?

Usually not. Only 10% of people in this job hold a bachelor's degree or higher.

Will AI change the work of a cement, stone and other mineral products machine operator?

Generative AI can do relatively little of this work, by the ILO's global estimate.

Sources

Census and Statistics Department (2021 Population Census): 2021 Population Census, Interactive Data Dissemination Service: working population by occupation (38 groups) and sex, age, education, income; median income and field of education (9 groups) (2021 Population Census), retrieved 4 October 2026
Census and Statistics Department (General Household Survey): Median monthly employment earnings by occupation (9 groups), excluding foreign domestic helpers (Table 210-06317A); employed persons by occupation, age and sex (210-06307A) and by industry (210-06308A) (2025 annual (series to 2026-07)), retrieved 4 October 2026
Labour and Welfare Bureau; tables published by C&SD: Mid-term Update of Manpower Projection to 2028: supplementary statistical tables (5 occupation groups, 17 selected industries) (2025 to 2028 (published 2026-09)), retrieved 4 October 2026
International Labour Organization, Generative AI and Jobs: A Refined Global Index of Occupational Exposure (ILO Working Paper 140, Gmyrek et al.) (ILO Working Paper 140, May 2025, Annex Table A1), CC BY 4.0, retrieved 4 October 2026

Updated 4 October 2026