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- Q1419614 subject Q7952800.
- Q1419614 abstract "Stoping is the process of extracting the desired ore or other mineral from an underground mine, leaving behind an open space known as a stope. Stoping is used when the country rock is sufficiently strong not to collapse into the stope, although in most cases artificial support is also provided.The earliest forms of stoping were conducted with hand tools or by fire-setting; later gunpowder was introduced. From the 19th century onward, various other explosives, power-tools, and machines came into use. As mining progresses the stope is often backfilled with tailings, or when needed for strength, a mixture of tailings and cement. In old mines, stopes frequently collapse at a later time, leaving craters at the surface. They are an unexpected danger when records of underground mining have been lost with the passage of time.Stoping is considered "productive work", and is contrasted with "deadwork", the work required merely to access the mineral deposit, such as sinking shafts and winzes, carving adits, tunnels, and levels, and establishing ventilation and transportation.".
- Q1419614 thumbnail S._T._Gill_-_Nealess_Stopes,_Burra_Burra_Mine,_April_12th_1847_-_Google_Art_Project.jpg?width=300.
- Q1419614 wikiPageWikiLink Q102798.
- Q1419614 wikiPageWikiLink Q1096.
- Q1419614 wikiPageWikiLink Q1122817.
- Q1419614 wikiPageWikiLink Q1256418.
- Q1419614 wikiPageWikiLink Q12861.
- Q1419614 wikiPageWikiLink Q1392436.
- Q1419614 wikiPageWikiLink Q1518760.
- Q1419614 wikiPageWikiLink Q1784525.
- Q1419614 wikiPageWikiLink Q216681.
- Q1419614 wikiPageWikiLink Q2505150.
- Q1419614 wikiPageWikiLink Q3589374.
- Q1419614 wikiPageWikiLink Q381176.
- Q1419614 wikiPageWikiLink Q44497.
- Q1419614 wikiPageWikiLink Q5177532.
- Q1419614 wikiPageWikiLink Q5288904.
- Q1419614 wikiPageWikiLink Q556186.
- Q1419614 wikiPageWikiLink Q5619250.
- Q1419614 wikiPageWikiLink Q58917.
- Q1419614 wikiPageWikiLink Q59049.
- Q1419614 wikiPageWikiLink Q5988006.
- Q1419614 wikiPageWikiLink Q7883681.
- Q1419614 wikiPageWikiLink Q7952800.
- Q1419614 wikiPageWikiLink Q987262.
- Q1419614 comment "Stoping is the process of extracting the desired ore or other mineral from an underground mine, leaving behind an open space known as a stope. Stoping is used when the country rock is sufficiently strong not to collapse into the stope, although in most cases artificial support is also provided.The earliest forms of stoping were conducted with hand tools or by fire-setting; later gunpowder was introduced.".
- Q1419614 label "Stoping".
- Q1419614 depiction S._T._Gill_-_Nealess_Stopes,_Burra_Burra_Mine,_April_12th_1847_-_Google_Art_Project.jpg.