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Once a placer deposit is located by gold panning, the miner usually shifts to equipment that can treat volumes of sand and gravel more quickly and efficiently.
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Once and placer
Once it is clear that the volume of gold-bearing sediment is larger than a few cubic metres, the placer miners will build rockers or sluice boxes, with which a small group can wash gold from the sediment many times faster than using gold pans.
Once a suitable placer deposit is located, some gravel from it is scooped into a pan, where it is then gently agitated in water and the gold sinks to the bottom of the pan.
Once the placer deposits had been exhausted, an open pit gold mine was established in 1847 and commercial operations continued until the early 1980s.
Once placer gold is discovered, the gold pan is usually replaced by sluices or mechanical devices to wash greater volumes of material.
Once and deposit
Once they have collected nectar and pollen, bumblebees return to the nest and deposit the harvested nectar and pollen into brood cells, or into wax cells for storage.
Once Western Canada's largest coal producer, Drumheller now contributes to a vibrant energy sector and boasts Alberta's second largest natural gas deposit, the West Drumheller Field.
Once the mineral identification and reserve amount is reasonably determined, the next step is to determine the feasibility of recovering the mineral deposit.
Once Jack's mail server has accepted the message, it must either pass it along to Jill's mail server, or else deposit a bounce message in Jack's mailbox.
Once they emerge as adults they mate, deposit their eggs near the water ( often on overhanging vegetation ), then die.
Once ready, the female will deposit the eggs in a safe location, usually on the underside of a rock or log.
Once the facility is built, it operates more or less autonomously and will produce the specified resource at a rate determined by various factors including the richness of the deposit in that area.
Once in Turkey, Buck goes to the bank and receives the contents of the old man's safety deposit box – a large sum of money and a small package.
Once and is
Once more, in other words, Steele is said to be indebted to Swift for his `` wit '' ; ;
Once the scene is set, Trevelyan skilfully builds up the tense story until it reaches its climax in the dramatic victory of Marlborough and Eugene of Savoy at Blenheim.
Once he has been identified, however, a new melody is used to accompany his narrative, a bleak motif with barren octaves creating a rather ancient effect:
Once again what has happened is an all-consuming confabulation of the incidentals, the accidents of painting.
Once the grains are ground, vitamin E begins to deteriorate immediately and half of it is lost by oxidation and exposure to the air within one week.
Once more the fallacious equation is advanced to argue that since business is restricted under the anti-monopoly laws, there must be a corresponding restriction against labor unions: the law must treat everybody equally.
One of the finest soft shoe tunes ever invented, `` Once In Love With Amy '' is also, of course, one of the most tantalizingly persistent of light love lyrics to come out of American musical comedy in our era.
Miss Tamiris' `` Once Upon A Time '' is a problem piece about a man and a woman and the three `` figures '' that bother them somehow.
Once a predator has sampled one of these, it is likely to remember the colouration next time it encounters a similar animal.
Once the beams are laid across the building, it is then time to begin the placing of adobe bricks to create the roof.
Once programmed, it is able to choreograph its motions and gestures with its voice.
Once the physical therapist determines that the individual is able to safely perform parts of the program independently, it is important that the individual be prescribed and regularly engage in a supplementary home exercise program that incorporates these components to further improve long term outcomes.
Once chosen, he must request blessing: the blessing of an abbot is celebrated by the bishop in whose diocese the monastery is or, with his permission, another abbot or bishop.
Once a movement per unit time is observed, astronomers compensate for the parallax caused by the earth ’ s motion during this time and the heliocentric distance to this object is calculated.
Once the anchor is hauled up to the hawsepipe, the ring end is hoisted up to the end of a timber projecting from the bow known as the cathead.
Once the desired scope is laid out, the vessel should be gently forced astern, usually using the auxiliary motor but possibly by backing a sail.
Once again it is important to bear in mind the lack of ' neutral ' state intervention.
Once cytochrome c is released it binds with Apoptotic protease activating factor-1 ( Apaf-1 ) and ATP, which then bind to pro-caspase-9 to create a protein complex known as an apoptosome.
Once when she is, in a key scene, finally invited by the male members of the country club she gives a toast citing from the song “ With rue my heart is laden ”.
Once and located
Once land had been located that offered a better climate and room to expand, the group began plans to move.
Once a user has located a resource within the catalogue, they must then use navigational guidance to retrieve the resource physically ; a process that may be assisted through signage, maps, GPS systems or RFID tagging.
Once they have reached the peak of their ambitions, Ken and Tanaka create Otakuland, the equivalent of Disneyland for otaku ( the story suggests Otakuland to be located in the same city of Urayasu, Chiba Prefecture, as the original Tokyo Disneyland.
Once there, they successfully located the Maquis ship docked at the Caretaker's array.
Once located, the armored infantry would attack using tanks as infantry support.
Once numbering around 20 outlets, which were located in Wales and near the Welsh border in England, now only one remains.
Once they transited the Cascade's Columbia River Gorge with its multiple rapids and treacherous winds they would have to make the portage around the Cascade Rapids before coming out near the Willamette River where Oregon City, Oregon was located.
He is the host in the documentary film The Once and Future Griffith Observatory currently running in the Leonard Nimoy Event Horizon Theater located at the recently reopened Griffith Observatory in Los Angeles, California.
Once buffalo were located, hunting did not begin until the medicine men of the tribe considered the time propitious.
Once launched, orbits are normally located within relatively constant flat planes at a fixed angle to the axis of the Earth, and the Earth rotates within this orbit.
Once a suitable area is located, a prey species is hunted and used as bait.
Once such an area is located, the dogs ( usually bloodhounds or ridgebacks ) are released.
Once a prosperous port, it is now located about from the shores of the Mediterranean Sea.
Once a small château located between the royal residences of Vincennes and Fontainebleau, the estate of Vaux-le-Vicomte was purchased by Nicolas Fouquet in 1641.
Once a quaint farming town, Naperville has evolved into an affluent city with numerous corporate headquarters located there.
Once per year from 1995 until 2000, the NASCAR Craftsman Truck Series held a race at the Evergreen Speedway located at the Evergreen State Fairgrounds.
Once solely located in Collin County, Wylie now extends into neighboring Dallas and Rockwall counties.
Once an independent town, it was incorporated into the City of Leeds metropolitan borough in 1974, and is located midway between Bradford and Leeds city centres.
Once located at the juncture of Clinton Road and Vanderbilt Court, it was moved in 1989 to its current location in the heart of the village at 230 Seventh Street.
Once we have located the stationary points, we need to do further tests to see if we have found a minimum, a maximum or just a stationary
Once epicentral distances have been calculated from at least three seismographic measuring stations, it is a simple matter to find out where the epicenter was located using trilateration.
Once the tip of the needle and cannula are located in the vein the trocar is withdrawn and discarded and the cannula advanced inside the vein to the appropriate position and secured.
Once a service is located, the client can download an implementation of that interface, which it then uses to communicate with the service.
Once again this move was for strategic reasons as it was located in the Aures Mountains.
3.087 seconds.