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单词 placer mining
例句 placer mining
Mining remains a major and obvious presence, with bold, yellow-black signs announcing: “This business supports placer mining. Placer mining supports this business.” 125 years after gold was discovered in the Yukon, we ventured up to Dawson City. Here’s what it looks like now 2021-09-10T04:00:00Z
Come Sept. 9, go ahead and party like it’s 1850, and you’re a white man with a big, juicy placer mining claim! It's time to celebrate California Admission Day! Wait, what's Admission Day? 2021-09-07T04:00:00Z
What I do, the way that we're placer mining, it's pretty secluded, pretty lonely, and you're pretty disconnected from the rest of the world. ‘Gold Rush’ star Rick Ness talks mining during a pandemic: ‘I had one goal in mind and that was redemption’ 2020-10-28T04:00:00Z
Mr. Tremblay began placer mining a few years ago, a passion he admitted is stoked more by the thrill of discovery than the prospect of striking it rich. Faded Yukon Gold Rush Town, Population 20, Mines Its Weirdness 2017-10-15T04:00:00Z
Eight years of placer mining in that state produced little, so he went over the Sierras to Virginia City, Nevada, and worked in the silver deposits known as the Comstock Lode. The Cabaret Beat 2015-02-16T05:00:00Z
Helena was established as a placer mining camp in 1864 upon the discovery of gold in Last Chance Gulch. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2 "Hearing" to "Helmond" 2012-04-25T02:00:53.567Z
There a placer mining outfit, including sieves and gold pans, had been erected and City Custodian Dewitt C. Cregier thus searched for valuables in the rubbish. Chicago's Awful Theater Horror 2012-03-28T02:00:25.877Z
"Well, you might try a little surface or placer mining," replied Gabe. Two Boy Gold Miners or, Lost in the Mountains 2012-03-12T03:00:19.777Z
"Men get rich placer mining now and then, and it might happen to me," he said. Delilah of the Snows 2012-01-23T03:00:09.087Z
At Omai on the Essequibo river a German syndicate worked a large concession on the hydraulic process of placer mining with considerable success, and more recently took to dredging on its 679 flats. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6 "Groups, Theory of" to "Gwyniad" 2011-12-16T03:00:12.320Z
Then there is placer mining, so-called because it is a place on the bank of a river where the gold is found. Colorado?The Bright Romance of American History 2011-08-25T02:00:28.183Z
This placer mining camp was run on a community basis, and the camp cook insisted upon getting supper for all, and an abundant if not a delicately prepared meal was the result. Ruth Fielding In the Saddle College Girls in the Land of Gold 2011-06-14T02:00:22.083Z
I had been placer mining up by Pine Grove, in California, all summer. The Comstock Club 2011-05-18T02:00:16.367Z
Well," he said, "I suppose placer mining is always a trifle uncertain. Delilah of the Snows 2012-01-23T03:00:09.087Z
A very large proportion of both the quartz and placer mining of North America is in regions occupied by metamorphic rock. North America 2011-05-05T02:00:20.027Z
I've been at placer mining for years in California and British Columbia, and the mines at Dawson are more extensive and beyond anything I ever saw. All about the Klondyke gold mines 2011-04-13T02:00:12.887Z
However, Ruth Fielding’s mind was fixed upon something far different from placer mining. Ruth Fielding In the Saddle College Girls in the Land of Gold 2011-06-14T02:00:22.083Z
While placer mining, he one day picked up a gold nugget, from which his engagement ring was made by a jeweler in San Francisco, and worn by Mrs. Roper until her death, October 28, 1908. Collection of Nebraska Pioneer Reminiscences 2011-01-05T03:00:58.503Z
Ralph Merrit and Frank Kent had finished eating and were deep in the consideration of the newest and most approved methods of placer mining. The Ranch Girls' Pot of Gold
We should be stopped from manufacturing by the great productivity of labor in placer mining. Essentials of Economic Theory As Applied to Modern Problems of Industry and Public Policy
As the Klondyke diggings, as thus far developed and staked, are upon Canadian territory it is important to bear in mind the regulations imposed by the Dominion Government on placer mining. All about the Klondyke gold mines 2011-04-13T02:00:12.887Z
And they were all ready and willing to show “the ladies from the East” how placer mining was done. Ruth Fielding In the Saddle College Girls in the Land of Gold 2011-06-14T02:00:22.083Z
In the meantime the water had played out in the placer mining district so there was "nothing doing." Collection of Nebraska Pioneer Reminiscences 2011-01-05T03:00:58.503Z
As the cradle gave way to placer mining, larger and larger schemes of co�peration came into use. The American Mind The E. T. Earl Lectures
The board-sluice is the great washing machine, and the most important instrument used in the placer mining of California. Hittel on Gold Mines and Mining
"Close season" shall mean the period of the year during which placer mining is generally suspended. All about the Klondyke gold mines 2011-04-13T02:00:12.887Z
That's the difference between it and placer mining in the North. Partners of the Out-Trail
Creeks that seemed to me a good field for placer mining came down from the left, but no one stopped to do more than pan a little gravel from a cut bank or a bar. The Trail of the Goldseekers A Record of Travel in Prose and Verse
The use of streams for placer mining, as in California, has resulted in formulation of laws and in extensive litigation, again requiring analysis of geologic conditions. The Economic Aspect of Geology
"Hydraulic mining" is the highest branch of placer mining; it washes more dirt, and requires more water, and a larger sluice, than any other kind of mining. Hittel on Gold Mines and Mining
The forms of application for a grant for placer mining and the grant of the same shall be according to those made, provided or supplied by the gold commissioner. All about the Klondyke gold mines 2011-04-13T02:00:12.887Z
During the early years of placer mining in California thousands of acres of rich lands in the foothills were destroyed. Conservation Reader
Here we turned up in search of placer mining, the short summer soon past and we returned to Dawson and fitted out for the winter. Black Beaver The Trapper
Mr. McKensey told the Captain that I was quite an expert in placer mining and had been in the Black Hills, Virginia City, and Old Alder Gulch. The Sheep Eaters
The pan must always be used in cleaning up the dirt which collects in the cradle, in prospecting, and frequently in washing small quantities of dirt collected in other kinds of placer mining. Hittel on Gold Mines and Mining
The entry of every holder for a grant for placer mining must be renewed and his receipt relinquished and replaced every year, the entry fee being paid each year. All about the Klondyke gold mines 2011-04-13T02:00:12.887Z
It also employs a great deal of money, as quartz mining requires capital, while placer mining does not. The Land of the Kangaroo Adventures of Two Youths in a Journey through the Great Island Continent
Nearly all the mining out here is placer mining, where the dirt is dug out and washed away, leaving the gold. Gold Seekers of '49
But the element of chance is so important a factor in placer mining that the whole thing partakes more of the nature of gambling than of a commercial venture. Ten Thousand Miles with a Dog Sled A Narrative of Winter Travel in Interior Alaska
Just now placer mining is the only method employed. Klondike Nuggets and How Two Boys Secured Them
In the first case it is obtained in crude form by placer mining. An Elementary Study of Chemistry
Ballarat was nearly deserted for a time after the placer mining gave out, and the same was the case at the other places mentioned. The Land of the Kangaroo Adventures of Two Youths in a Journey through the Great Island Continent
For this reason hydraulic placer mining has been stopped by law. Checking the Waste A Study in Conservation
Why, by the exact converse of the usual Alaskan placer mining; by freezing down instead of thawing down. Ten Thousand Miles with a Dog Sled A Narrative of Winter Travel in Interior Alaska
In placer mining the pay dirt is washed by the simplest methods, such as were practised in California during the pioneer days. Klondike Nuggets and How Two Boys Secured Them
Butte was first settled as a placer mining camp in 1864. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary"
To get a fortune by quartz mining you must have a fortune to begin with, while in placer mining you need nothing more than a pick and shovel. The Land of the Kangaroo Adventures of Two Youths in a Journey through the Great Island Continent
Here and there are eloquent, though silent, reminders of the exciting days of placer mining and highway robbery, when Wells Fargo and Company brought treasure out of the mountains guarded by armed men. Forty-one Thieves A Tale of California
After spending two years in placer mining he returned to San Francisco in 1861. Sixty Years of California Song
There's been a lot of placer mining in that north country the last three or four years. Raw Gold A Novel
"A great evangelist was lost when you took to placer mining, Curly." The Enchanted Canyon
Those familiar with placer mining declare that the new gold-fields are the richest and finest ever discovered; they say that the California find of 1849 cannot be compared with this present one. The Great Round World and What Is Going On In It, Vol. 1, No. 39, August 5, 1897 A Weekly Magazine for Boys and Girls
He had taught school at Graniteville several winters, and had succeeded better at this business than at placer mining on the bars of the Middle Yuba. Forty-one Thieves A Tale of California
"I'm afraid," he added dryly, his eyes once more seeking Evadna's face with pure love hunger, "they aren't going to make much of a stagger at placer mining, if they haven't any water." Good Indian
And I really believe I could put him on to a few wrinkles in poker and placer mining, and maybe in paddling a birch canoe. Burning Daylight
Prospecting and desultory mining, especially placer mining, have been kept up, however, until the present day. Santo Domingo A Country with a Future
The entire section is given up to placer mining. Klondyke Nuggets A Brief Description of the Great Gold Regions in the Northwest
At the mouth of nearly every ravine there are countless little mounds which marked the end, or dump of the sluice-box in the placer mining. Down the Mother Lode
Six years later, Loper had been attracted to the San Juan River, a tributary of the Colorado in Southeastern Utah, by the excitement created by the discovery of placer mining there. The Grand Canyon of Arizona; how to see it
Similar conditions exist along the Sierra Nevada range of California, and to some extent placer mining has gone on under immense beds of lava, by a process of tunneling beneath the volcanic rock. The San Francisco calamity by earthquake and fire
Except in placer mining, which almost any one can learn, gold mining is a science. Last of the Great Scouts : the life story of Col. William F. Cody, "Buffalo Bill" as told by his sister
He confided to Russell his belief that the Colorado River offered much greater chances of richer placer mining. The Grand Canyon of Arizona; how to see it
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