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Hydraulic mining
 
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Video Software we use: https://amzn.to/2KpdCQF Ad-free videos. You can support us by purchasing something through our Amazon-Url, thanks :) Hydraulic mining, or hydraulicking, is a form of mining that uses high-pressure jets of water to dislodge rock material or move sediment.In the placer mining of gold or tin, the resulting water-sediment slurry is directed through sluice boxes to remove the gold.It is also used in mining kaolin and coal.Hydraulic mining originated out of ancient Roman techniques that used water to excavate soft underground deposits. ---Image-Copyright-and-Permission--- About the author(s): Henry Sandham (1842–1910) Alternative names Henry "Hy" Sandham Description Canadian painter and illustrator Date of birth/death 24 May 1842 21 June 1910 Location of birth/death Montreal, Quebec, Canada London, UK Work period 1856–1908 Work location Montreal, Boston, London Authority control VIAF: 16276438 ISNI: 0000 0001 1746 7676 ULAN: 500098047 LCCN: n87118624 GND: 138097534 WorldCat License: Public domain License Url: https://commons.wikimedia.org/wiki/File:Henry_Sandham_-_The_Monitor.jpg Author(s): Henry Sandham ---Image-Copyright-and-Permission--- This channel is dedicated to make Wikipedia, one of the biggest knowledge databases in the world available to people with limited vision. Article available under a Creative Commons license Image source in video
Views: 1549 WikiWikiup
Pioneer City - A Montana Ghost Town - Near Gold Creek, Montana MT
 
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In the 1870's, Pioneer Mining District had about one thousand people living in the area. Pioneer City was the main town and service center. It had a post office, four breweries, six saloons, four general stores and two hotels. By the late 1870's, gold worth over 333 billion (in today's dollars) was extracted from the area. When placer operations were no longer profitable, three dredges were used to dig down to bedrock. The town was moved and rebuilt to accommodate the destruction of the Mosier dredge. Most of the buildings in the new Pioneer City were ultimately destroyed by the dredge anyway. The buildings that survived the dredge couldn't survive dynamite and a bulldozer that was used to expand a cattle pasture. What remains today are the ruins of a few miners cabins. A poem from a bartender published in the "Missoula and Cedar Creek Pioneer" on April 27, 1871: Take pity, Miss Fanny The Belle of Pioneer And grant some indulgence To a vendor of beer Whose heart rending anguish Will bring on decline Oh, God of creation, I wish you was mine. We'd live in a parlor Behind the saloon With sour-krout in plenty For our honeymoons; We'd have schnapps by the bottle To make it go down And live in more splendor Than any in town. There is Fowler and Fischer And Wallace of yore There's cows and there's chickens And many things more But none like your Perry That sells lager beer His tender heart is breaking Each day in Pioneer. So now my dear Fanny If you will incline To join me in wedlock Just drop me a line And great expectations With me you will share Not to mention the sour-krout And oceans of beer. Pioneer City, April 24th, 1871 This sequence was captured with a Canon Vixia HFS-100 camera and edited with Adobe Premier Pro 6.0. Music is "Perspectives" by Kevin MacLeod is licensed under a CC Attribution 3.0. http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300027.
Views: 7040 davidegg22
California Gold Rush
 
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Coordinates: 38°48′09″N 120°53′41″W / 38.80250°N 120.89472°W / 38.80250; -120.89472 This video targeted to blind users. Attribution: Article text available under CC-BY-SA Public domain image source in video
Views: 451 encyclopediacc
Tin | Wikipedia audio article
 
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This is an audio version of the Wikipedia Article: Tin Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: - increases imagination and understanding - improves your listening skills - improves your own spoken accent - learn while on the move - reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. You can find other Wikipedia audio articles too at: https://www.youtube.com/channel/UCuKfABj2eGyjH3ntPxp4YeQ You can upload your own Wikipedia articles through: https://github.com/nodef/wikipedia-tts "The only true wisdom is in knowing you know nothing." - Socrates SUMMARY ======= Tin is a chemical element with the symbol Sn (from Latin: stannum) and atomic number 50. It is a post-transition metal in group 14 of the periodic table of elements. It is obtained chiefly from the mineral cassiterite, which contains stannic oxide, SnO2. Tin shows a chemical similarity to both of its neighbors in group 14, germanium and lead, and has two main oxidation states, +2 and the slightly more stable +4. Tin is the 49th most abundant element and has, with 10 stable isotopes, the largest number of stable isotopes in the periodic table, thanks to its magic number of protons. It has two main allotropes: at room temperature, the stable allotrope is β-tin, a silvery-white, malleable metal, but at low temperatures it transforms into the less dense grey α-tin, which has the diamond cubic structure. Metallic tin does not easily oxidize in air. The first tin alloy used on a large scale was bronze, made of tin and copper, from as early as 3000 BC. After 600 BC, pure metallic tin was produced. Pewter, which is an alloy of 85–90% tin with the remainder commonly consisting of copper, antimony, and lead, was used for flatware from the Bronze Age until the 20th century. In modern times, tin is used in many alloys, most notably tin/lead soft solders, which are typically 60% or more tin and in the manufacture of transparent, electrically conducting films of indium tin oxide in optoelectronic applications. Another large application for tin is corrosion-resistant tin plating of steel. Because of the low toxicity of inorganic tin, tin-plated steel is widely used for food packaging as tin cans. However, some organotin compounds can be almost as toxic as cyanide.
Views: 7 wikipedia tts
Tin | Wikipedia audio article
 
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This is an audio version of the Wikipedia Article: Tin 00:01:51 1 Characteristics 00:02:00 1.1 Physical 00:04:57 1.2 Chemical 00:05:29 1.3 Isotopes 00:08:22 2 Etymology 00:09:24 3 History 00:11:12 4 Compounds and chemistry 00:11:29 4.1 Inorganic compounds 00:13:16 4.2 Hydrides 00:13:45 4.3 Organotin compounds 00:15:22 5 Occurrence 00:17:58 6 Production 00:18:17 6.1 Mining and smelting 00:18:25 6.2 Industry 00:19:06 7 Price and exchanges 00:21:43 8 Applications 00:22:04 8.1 Solder 00:23:16 8.2 Tin plating 00:24:16 8.3 Specialized alloys 00:26:01 8.4 Optoelectronics 00:26:23 8.5 Other applications 00:28:44 8.6 Organotin compounds 00:29:04 8.6.1 PVC stabilizers 00:29:44 8.6.2 Biocides 00:30:54 8.6.3 Organic chemistry 00:31:19 8.6.4 Li-ion batteries 00:32:16 9 Precautions 00:33:09 10 See also Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: - increases imagination and understanding - improves your listening skills - improves your own spoken accent - learn while on the move - reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. You can find other Wikipedia audio articles too at: https://www.youtube.com/channel/UCuKfABj2eGyjH3ntPxp4YeQ You can upload your own Wikipedia articles through: https://github.com/nodef/wikipedia-tts "The only true wisdom is in knowing you know nothing." - Socrates SUMMARY ======= Tin is a chemical element with the symbol Sn (from Latin: stannum) and atomic number 50. It is a post-transition metal in group 14 of the periodic table of elements. It is obtained chiefly from the mineral cassiterite, which contains stannic oxide, SnO2. Tin shows a chemical similarity to both of its neighbors in group 14, germanium and lead, and has two main oxidation states, +2 and the slightly more stable +4. Tin is the 49th most abundant element and has, with 10 stable isotopes, the largest number of stable isotopes in the periodic table, thanks to its magic number of protons. It has two main allotropes: at room temperature, the stable allotrope is β-tin, a silvery-white, malleable metal, but at low temperatures it transforms into the less dense grey α-tin, which has the diamond cubic structure. Metallic tin does not easily oxidize in air. The first tin alloy used on a large scale was bronze, made of tin and copper, from as early as 3000 BC. After 600 BC, pure metallic tin was produced. Pewter, which is an alloy of 85–90% tin with the remainder commonly consisting of copper, antimony, and lead, was used for flatware from the Bronze Age until the 20th century. In modern times, tin is used in many alloys, most notably tin/lead soft solders, which are typically 60% or more tin and in the manufacture of transparent, electrically conducting films of indium tin oxide in optoelectronic applications. Another large application for tin is corrosion-resistant tin plating of steel. Because of the low toxicity of inorganic tin, tin-plated steel is widely used for food packaging as tin cans. However, some organotin compounds can be almost as toxic as cyanide.
Views: 9 wikipedia tts