Number |
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711 |
Miners and Quarrymen | Workers in this unit group extract solid minerals from underground or surface mines and quarries. Their functions include: extracting coal, ores and other solid minerals from underground or surface mines; extracting granite, limestone, slate, flint or other kinds of stone from quarries; setting and operating machines which cut channels in mine workface, drill holes into mine or quarry workface for blasting or extract coal automatically from coal seam; determining positions and force of explosions required, and charging and firing explosives, to dislodge solid mineral from mine or quarry workface; cutting, fitting and installing wood or steel props, pillars and arches to support walls and roofs of underground workings; collecting samples of coal or ore for laboratory analysis; extracting chalk, clay, gravel or sand from open pits; performing other tasks related to the foregoing. |
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712 |
Mineral and Stone Treaters | Workers in this unit group prepare ores, stone and other minerals for distribution or further processing. Their functions include: drilling holes and driving wedges into quarried stone to break it into slabs or blocks; operating machines which crush and break lumps of mineral (except chemicals) to required size; operating grinding mill to pulverise stone and mineral-bearing ores; operating batteries of jigs or flotation machines to separate mineral from gangue; tending equipment which precipitates gold or silver from cyanide solution onto zinc; tending gravity device to separate slate and rock from coal; performing related tasks. |
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713 |
Well-Drillers, Borers and Related Workers | Workers in this unit group erect and operate drilling plant and perform related tasks in the sinking and operation of wells. Their functions include: preparing and operating derrick pipe-handling devices and slush pumps; operating rotary or percussion drilling plant to drill oil or gas wells; cementing openings in walls or casings of oil or gas wells; cleaning and servicing oil or gas wells and repairing and replacing pumping rods, casings and tubings; treating oil and gas wells with acid to increase their production; setting up and operating drilling plant to drill wells or bores other than for oil or gas; performing related tasks. |
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720 |
Metal Processors, Specialisation Unknown | Workers in this unit group carry out metal processing tasks as described in minor group 7-2. Their specialisation is unknown. |
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721 |
Metal Smelting, Converting and Refining Furnacemen | Workers in this unit group operate metal smelting, converting and refining furnaces. Their functions include: operating blast furnaces to smelt ores for production of ferrous or non-ferrous metals; operating furnaces to convert or refine pigiron or scrap-metal to produce steel; operating furnaces to convert or refine non-ferrous metals; performing related tasks. Workers who operate furnaces to melt metal for casting or reheat metal for forging, pressing or rolling are classified in unit group 7-23. |
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722 |
Metal Rolling-Mill Workers | Workers in this unit group operate rolling mills to roll metal. Their functions include: operating rolling mills to shape hot steel ingots into blooms, slabs, billets or sheet bars for further processing, or to shape heated semi-finished steel pieces into bars, angles, ties, rails, sheets or other finished forms; operating continuous mills in which hot steel slabs are passed through a series of rolls (stands) to produce finished plates or sheets in one continuous operation; operating rolling mills to reduce cold steel strip or sheet to required gauge and impart desired finish; operating rolling mills to reduce or form hot or cold non-ferrous metal into plate, sheets, foil, wire or rod of specified dimensions; operating rolls to form seamless tubes and pipes from billets which have been pierced longitudinally; manipulating controls of a rolling mill according to signals from roller; performing related tasks. |
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723 |
Metal Melters and Reheater | Workers in this unit group operate furnaces to melt or reheat metals. Their functions include: operating furnaces to melt ferrous and non-ferrous metals for casting; operating furnaces to reheat bars, plates and other stock metal forms prior to forging, powerpressing, rolling or other further processing; performing related tasks. |
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724 |
Metal Casters | Workers in this unit group pour metal into moulds and operate metal-casting machines. Their functions include: pouring molten metal into moulds to produce metal castings: operating centrifugal casting machines to cast cylindrical metal products; operating die-casting machines to make castings from non-ferrous metals; operating continuous casting machines to produce tubes and rods from non-ferrous metal; performing related tasks. |
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725 |
Metal Moulders and Coremakers | Workers in this unit group make sand moulds and cores for casting metal. Their functions include: making sand moulds by hand on a bench for small metal castings, or on the foundry floor or in a pit for large metal castings; making sand moulds for metal castings using auxiliary machines; making sand cores for use in metal moulds by hand or machine; performing related tasks. |
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726 |
Metal Annealers, Temperers and Case-Hardeners | Workers in this unit group alter the physical properties of metal objects by heating, cooling and chemical treatment. Their functions include: heating metal objects in a furnace and cooling them at a predetermined rate to relieve internal stresses, restore ductility and refine grain structure; hardening steel objects throughout by heating them in a furnace and quenching them; imparting a hard skin and tough, ductile core to steel objects by treating them with chemicals, heating and quenching or cooling them; reheating hardened steel objects in a furnace and quenching them to relieve stresses caused in performing related tasks. Metal bluer is classified in 7-29.20. |
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727 |
Metal Drawers and Extruders | Workers in this unit group draw and extrude metals through dies to make wire, pipes, tubes and similar products. Their functions include: making wire of specified diameter by hand on a draw bench or by setting and operating a wire-drawing machine; setting and operating a machine to draw seamless metal tubing; setting and operating a hydraulic press to extrude metal rods, bars and seamless tubing; performing related tasks. |
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728 |
Metal Platers and Coaters | Workers in this unit group operate equipment to plate and coat metal products. Their functions include: setting and controlling electroplating equipment; operating hot-dip equipment to coat iron and steel products; coating wire with non-ferrous metal by automatic machine; spraying molten metal on metal products to provide a protective or decorative coating or to build up worn or damaged surfaces; performing related tasks. |
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729 |
Metal Processors Not Elsewhere Classified | Workers in this unit group perform metal processing tasks not classified elsewhere. Their functions include: imparting a blue, rust-resistant, decorative finish to metal articles by treating them with chemicals and heating them; semi-finishing the surfaces of cast metal articles by hand and machine; operating equipment to clean metal articles in preparation for electroplating, galvanising, enamelling or similar finishing processes. |
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731 |
Wood Treaters | Workers in this unit group season and preserve wood. Their functions include operating steam-heated kilns to season wood; treating wood with chemicals to protect it against decay or parasites; performing related tasks. |
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732 |
Sawyers, Plywood Makers and Related Wood-Processing Workers | Workers in this unit group operate machines or use hand tools to saw wood, cut veneer and make plywood and otherwise prepare wood for further use. Their functions include: using hand saws or setting and operating one or more sawing machines in a sawmill, workshop or outside in forests; setting and operating multiple-blade sawing machines to cut uneven edges of rough boards straight and square; setting and operating band-saw machines to saw logs into plants or boards; setting and operating machines to cut veneer; operating plywood core-laying machines; operating hot-plate plywood presses; grading wood according to quality and size; performing related tasks. |
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733 |
Paper Pulp Preparers | Workers in this unit group prepare pulp for making paper. Their functions include: operating grinding machines to reduce logs to pulp; operating chipper machines to reduce logs to chips for making pulp; operating digesters to produce pulp from materials such as wood, rags, esparto, straw or waste paper; operating machines to bleach wood pulp, rags, esparto, straw or waste-paper pulp; operating machines which mix, beat and hydrate pulp and other ingredients to prepare stuff for making paper; performing related tasks. |
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734 |
Paper Makers | Workers in this unit group make paper by hand or machine. Their functions include: operating section of paper-making machines in which wet pulp is formed into paper or in which paper is dried, calendered, wound, slit and rewound; operating supercalender machines to impart gloss and finish to surface of paper; operating machines to glaze or impregnate paper with coating mixture; making high-quality paper by hand; performing related tasks. |
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741 |
Crushers, Grinders and Mixers | Workers in this unit group crush, grind, mix and blend chemicals and other materials employed in chemical and related processes. Their functions include: reducing solid chemicals and related materials to suitable size for further processing; grinding and pulverising solid chemicals and related materials; mixing or blending solids or liquids used in chemical and related processes; performing related tasks.Operators of crushing machines employed in ore-treating are classified in 7-12.30. |
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742 |
Cookers, Roasters and Related Heat Treaters | Workers in this unit group perform cooking, roasting and other heattreating tasks in chemical and related processes. Their functions include: cooking materials to purify, mix or compound them, give them a special property or effect a chemical change in them; heating substances in ovens, kilns or similar devices to dry them, give them a special property or effect a chemical change in them; operating driers for the processing of chemicals and related materials; performing related tasks. |
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743 |
Filter and Separator Operators | Workers in this unit group operate devices to filter and separate chemicals and related materials. Their functions include: operating filtering devices in which solutions are forced under pressure through a filtering unit; operating filtering devices in which solutions are vacuum-drawn through filtering media fitted to a rotating drum; operating machines which separate substances by centrifugal force; operating chemical, electrical or centrifugal equipment at oil well sites to remove sediment and water from crude oil; performing related tasks. |
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