- Settore: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who screens and dries nitrocellulose to prepare it for use in making dynamite. Respnsibilities include:
* Shovels nitrocellulose from drum onto nonsparking screen, using wooden shovel.
* Rubs nitrocellulose through screen by hand to remove foreign material.
* Spreads screened material on trays and places trays in drying chamber.
* Starts blower and tests drying material periodically, using moisture meter, to ensure that moisture content of nitrocellulose meets specifications.
* Scrapes dried material into fiber drums for delivery to dynamite mix house.
Industry:Professional careers
A professional who tends equipment that evaporates ammonium nitrate solution to form crystals used in making dynamite. Respnsibilities include:
* Starts pump to move specified quantities of ammonium nitrate solution from storage tank to weighing tank.
* Opens valve to drain weighed solution into heated tub.
* Starts agitator to mix solution as water evaporates and turn material as it crystallizes.
* Weighs out and pours specified quantities of chemicals into tub to prevent hardening of ammonium nitrate and to ensure uniform crystallization, indicated by visual inspection.
* Opens gate in side of tub to transfer crystals to storage barrels.
Industry:Professional careers
A professional who tends heating and vacuum equipment to cure preformed plastic parts. Respnsibilities include:
* Positions part in plastic bag and seals bag with hot iron.
* Inserts vacuum tube in bag and seals bag around tube with tape.
* Places part on cart, connects vacuum line to tube to remove air from bag, and smooths bag around part with brush to ensure complete vacuum.
* Pushes cart into curing oven or places part in autoclave.
* Sets oven controls or turns air-pressure valve of autoclave, as specified, to cure part.
* Removes part and cuts away plastic bag, using knife.
* May form part by positioning plastic sheet and mold in plastic bag, heating sheet under lamps, and forcing conformation of sheet to mold by vacuum pressure of bag.
* May impregnate fabric with plastic resins and cut fabric into strips for use in laminating preformed part.
Industry:Professional careers
A professional who tends gas-fired kiln to reclaim char (activated carbon) used in filtering corn syrups. Respnsibilities include:
* Observes thermometers and turns gas valves to heat and maintain specified temperatures in kiln.
* Starts conveyors that transfer char to and from kiln.
* Dumps sacks of char into kiln to replenish supply lost during firing process.
Industry:Professional careers
A professional who empties bone cooking tanks and tends oven that dries bones from which glue has been extracted. Respnsibilities include:
* Opens bottom of bone cooking tank.
* Starts feed mechanism and rotary paddles of oven.
* Places rod into top of cooking tank and pushes bones through opening of tank bottom into feed mechanism of oven.
* When bones are dried, presses button to stop rotary action of paddle in oven.
* Moves lever and locking device to release oven door.
* Presses button to actuate paddles inside oven that push dried bones from oven into bags or onto cart.
* Loads filled bag onto handtruck and pushes truck or cart to storage area.
* May turn dials to regulate temperature of oven.
* May bag, weigh, and close bags containing dried bones.
Industry:Professional careers
A professional who tends equipment that makes cadmium sulfate used in making pigments for paints and enamels.
* Shovels cadmium moss into tank of boiling water and sulfuric acid to form cadmium liquor.
* Tests liquor solution for acid and foreign content, as specified by laboratory.
Industry:Professional careers
A professional who tends equipment that makes cadmium sulfate used in making pigments for paints and enamels.
* Shovels cadmium moss into tank of boiling water and sulfuric acid to form cadmium liquor.
* Tests liquor solution for acid and foreign content, as specified by laboratory.
Industry:Professional careers
A professional who tends kiln that develops color of pigments used in making paints and glass enamels. Respnsibilities include:
* Moves controls to set automatic heat regulator that maintains specified temperature in kiln.
* Adjusts gas burners in kiln, using handtools, and lights pilot flames and burners.
* Raises kiln bed or signals calcine furnace loader to raise kiln bed, containing pigments, into kiln and to remove bed from kiln after specified time.
* May fill and empty saggers (pigment containers).
* May tend crusher that breaks calcined chunks of pigment into smaller particles.
* May tend auxiliary equipment, such as coaler, conveyor systems, pump, and rotary vacuum filter.
Industry:Professional careers
A professional who tends equipment that fluffs and dries cotton linters or woodpulp for further processing into explosives. Respnsibilities include:
* Places portion of linters or woodpulp on revolving rollers that feed it into cylinder equipped with picking spikes.
* Inspects fluffed material for presence of impurities and fluffy appearance as it is discharged into drier.
* Moves controls to maintain temperature of hot-air oven at plant standard and to regulate speed of drier conveyor for efficient drying.
* When tending separate picking and drying units, may be designated according to unit tended as cotton-picker operator; linter-drier operator.
Industry:Professional careers
A professional who tends ovens that cure fuels loaded (cast) into rocket-motor cases. Respnsibilities include:
* Observes recording instrument charts and dials of timing devices to verify required temperatures and curing-cycle times.
* Turns valves to switch from automatic-instrument controls to manual control of steam-supply valves to regulate temperature.
Industry:Professional careers
