1. Supervises and coordinates activities of workers engaged in crushing, grinding, and concentrating ore preparatory to further processing or shipment: Observes meters, gauges, recording instruments, and operation of machines and equipment to detect malfunctions, faulty operation by worker, or need for repairs. 2. Orders adjustments and repairs to restore machines …
1. Tends equipment that pulverizes coal and conveys it to storage bins or boiler feed hoppers: Signals DRIER OPERATOR to send dried coal to mill, and closes switch to set mill in operation. 2. Moves levers to adjust automatic mechanism that controls feed rate of coal into pulverizing mill. 3. …
1. Tends conveyor, and spraying and drying unit that cools and dries milled rubber stock: Monitors flow of rubber stock as it drops from mixer through batch-off mill onto conveyor. 2. Removes stock adhering to mill rollers with long-handled scraper and frees stock if it piles up on conveyor. 3. …
1. Compiles and feeds input data into computer that controls reduction processing of steel slabs on roughing section of hot-strip rolling mill and records mill production and operating data: Reviews rolling schedule to ascertain operational data, such as slab sizes, metallurgical analysis, and rolling sequences. 2. Contacts heating personnel by …
1. Tends machine that prints identification data on fabricated pipe: Positions and secures type in holder on printing machine, using handtools. 2. Examines test impression to ensure printing of specified information, such as heat and lot numbers; size, gauge, and grade of pipe; and shift and initials of welder. 3. …
1. Sets up and operates rolling mill to form sheet metal sections of various types, gauges, and lengths from coils of sheet steel according to blueprints or other specifications: Verifies gauge and size of raw material against specifications, using tape measure and gauge. 2. Positions and secures stock-coil on pay-out …
1. Supervises and coordinates activities of workers engaged in grinding sugarcane in series of crusher mills to extract juice: Signals workers to regulate speed of conveyors and crusher rollers. 2. Pries cane loose from between rollers to break up jams, using wooden pole. 3. Adjusts tension of rollers to ensure …
1. Mixes specified ingredients with molten lead, pours lead into molds, and cuts lead slabs to specified dimensions: Charges kettle with materials for melting, using shovel. 2. Guides crane-supported mixer into kettle, and mixes contents in kettle. 3. Opens valve permitting molten metal to flow into mold to form slab. …
1. Tends one or more mills that grind materials, such as rock, ore, ingredients for food, drugs, and chemicals with steel, stone, or ceramic balls or rods: Pushes lever or adds balls to mill as needed or specified. 2. Dumps material or opens flow gate to load mill. 3. Secures …
1. Verifies width of first plate rolled on roughing mill, using width gauge: Sets gauge for specified width. 2. Places gauge on first plate rolled to determine conformance to specifications and signals mill operator to continue rolling process. 3. Moves steam-jet controls and throws salt on plates to loosen scale …
1. Tends roll mill that crushes and disperses particles of pigment material in batches of viscid organic pigments: Starts roll mill, and scoops or pours batch of viscid organic pigment into hopper of roll mill. 2. Observes distribution of pigment particles on roll of mill, and moves lever to adjust …
1. Tends machine that mixes meat scraps, used in poultry feed, into uniform mixture: Starts machine and opens slide gate in hopper to feed scraps into machine. 2. Observes meter and adjusts slide gates in feed hopper to regulate flow of material into machine.
1. Tends equipment that mills and sifts milk powders: Fastens specified screen in sifter, using handtools, and starts hammer mill, vibrating sifter, and tank agitator. 2. Starts conveyor that transfers coarse, dried powder from sifter to hammer mill. 3. Turns crank to move motor belt and alter speed of hammer …
1. Tends pump that pumps incoming milk from tank trucks to storage tank, and computes and records volume of milk received: Weighs loaded truck on platform scale and records weight on record sheet. 2. Dips and pours sample of milk from vent hole of truck into bottle for laboratory analysis. …
1. Tends system of grinders, crushers, conveyors, vibrating screens, and elevators in salt mill that crush and screen rock salt extracted from mine: Moves switches, levers, and other controls on instrument panels to start and stop equipment. 2. Reads gauges to verify specified operation of equipment. 3. Starts and stops …
1. Collects milk samples from farms, dairy plants, and tank cars and trucks for laboratory analysis: Removes sample from bulk tanks, tankers or milking machine, using dipper or pipette, and pours sample into sterile bottles. 2. Weighs samples, using scale. 3. Labels bottle with origin of sample, and packs samples …
1. Tends machine that milks dairy cows: Guides cow into stanchion and washes teats and udder of cow with disinfectant. 2. Squeezes cow’s teat to collect sample of milk in strainer cup and examines sample for curd and blood. 3. Starts milking machine and attaches cups of machine to teats …
1. Installs and services automatic milking systems in barns and milkhouses, using handtools and power tools: Confers with customer to ascertain needs, sketches layout, and estimates costs for optimum equipment layout. 2. Drills holes and bolts milking equipment, such as control panels, pumps, wash sinks, feed stalls, and gates, in …
1. Drives insulated tank truck to transport bulk milk between farms, dairies, and commercial establishments: Examines milk to detect sediment or stale odor, and takes sample for laboratory analysis. 2. Observes level gauge of storage tank and computes and records weight of milk in tank. 3. Connects hose and turns …
1. Dumps, weighs, and records weight of incoming milk received in milk cans by dairy, and tends washing machine that sterilizes empty cans: Presses switch to activate conveyor of can washing machine and turns valves to admit steam and water to machine. 2. Presses switch to activate conveyor that moves …
1. Operates microfilm unit camera to film documents: Selects and inserts format disk, turns knobs and flips switches to set controls of unit operation, such as exposure time, margin space, and camera action, according to format instructions. 2. Selects specified camera lens according to document reduction ratios desired on film …
1. Moves levers on adjustable boom to position microphone in proximity of performers during filming of motion picture or television broadcasts: Attaches microphone to rubber supports at end of boom and places preamplifier in container attached to boom as directed by SOUND MIXER. 2. Connects microphone wires to preamplifier and …
1. Tends intermediate carding machines that open, clean, mix, and straighten wool, asbestos, or synthetic fibers and deliver carded stock to finisher card: Patrols area between breaker and finisher cards and observes intermediate carding to detect clogged rollers and breaks in carded web. 2. Stops machine, removes fiber from clogged …
1. Tends machine that automatically mounts developed microfilm onto cards for filing purposes: Inserts roll of microfilm into machine. 2. Fills hopper with presorted cards. 3. Pours specified amount of adhesive solution into hopper to coat cards. 4. Starts machine and observes coating of cards with adhesive solution and mounting …
1. Tends machine that automatically processes microfilm and examines processed film to ensure that quality of microfiche meets established standards: Loads film into magazine of camera under darkroom conditions, attaches magazine to camera, and splices end of film to leader in machine to facilitate threading film, using splicing tape. 2. …
