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sostegni a strozzi

English translation: underhand stoping without supports

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GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
Italian term or phrase:coltivazione senza sostegni a strozzi
English translation:underhand stoping without supports
Entered by: Ivana UK
Options:
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13:58 Oct 29, 2006
Italian to English translations [PRO]
Mining & Minerals / Gems / underground mining methods
Italian term or phrase: sostegni a strozzi
coltivazione senza sostegni a strozzi:

when removing useful mineral, non-useful mineral is left behind, in the form of pillars, for roof support

I have no idea what type of supports these are.

The only possible reference I have is the De Mauro definition, which may or may not apply in this case:

ing.civ., nella costruzione di gallerie stradali, parte sottostante la superficie di contatto tra la calotta e i piedritti
Ivana UK
United Kingdom
Local time: 11:00
mined pillars
Explanation:
Hi there, I know it sounds bizarre however, please follow the link and see for yourself..a short version is pasted below
Underground Room and Pillar Mining. Underground mines in the United States are typically operated using one of two different methods: room and pillar mining or longwall mining. In 2004, approximately 82% of our produced coal volume came from underground mining operations using the room and pillar method with continuous mining equipment.


In room and pillar mining, rooms are cut into the coal bed leaving a series of pillars, or columns of coal, to help support the mine roof and control the flow of air. Continuous mining equipment is used to cut the coal from the mining face. Generally, openings are driven 20 feet wide and the pillars are generally rectangular in shape measuring 35-50 feet wide by 35-80 feet long. As mining advances, a grid-like pattern of entries and pillars is formed. Shuttle cars are used to transport coal to the conveyor belt for transport to the surface.



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Note added at 10 hrs (2006-10-30 00:36:35 GMT)
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A couple morelinks for you one (very very long) has pictures of these shafts. The "strozzare" means to choke (like being strangulated), therefore an otherwise even tube that is narrowed at one point would be my guess.. Good luck!! :o)

http://www.dnr.state.oh.us/mineral/coal/miningfactsht.htm

http://images.search.yahoo.com/search/images/view?back=http:...

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Note added at 3 days23 hrs (2006-11-02 13:35:55 GMT)
--------------------------------------------------

I really think you need to flip it..

sustaining or retaining , even transversal pillars are left/put/carved in place, in the descent that follows the ore, at points containing little or no mineral deposis /or in locations where little or no mineral deposits are found

--------------------------------------------------
Note added at 3 days23 hrs (2006-11-02 13:39:16 GMT)
--------------------------------------------------

Heading would be
forming/placement/of the load bearing pillars

Good luck!!
Selected response from:

Rosanna Palermo
Local time: 05:00
Grading comment
Thanks for your help! I spoke to the client and after much deliberation we decided on: underhand stoping (without supports).
2 KudoZ points were awarded for this answer

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Summary of answers provided
4mined pillars
Rosanna Palermo


Discussion entries: 4





  

Answers


10 hrs   confidence: Answerer confidence 4/5Answerer confidence 4/5
mined pillars


Explanation:
Hi there, I know it sounds bizarre however, please follow the link and see for yourself..a short version is pasted below
Underground Room and Pillar Mining. Underground mines in the United States are typically operated using one of two different methods: room and pillar mining or longwall mining. In 2004, approximately 82% of our produced coal volume came from underground mining operations using the room and pillar method with continuous mining equipment.


In room and pillar mining, rooms are cut into the coal bed leaving a series of pillars, or columns of coal, to help support the mine roof and control the flow of air. Continuous mining equipment is used to cut the coal from the mining face. Generally, openings are driven 20 feet wide and the pillars are generally rectangular in shape measuring 35-50 feet wide by 35-80 feet long. As mining advances, a grid-like pattern of entries and pillars is formed. Shuttle cars are used to transport coal to the conveyor belt for transport to the surface.



--------------------------------------------------
Note added at 10 hrs (2006-10-30 00:36:35 GMT)
--------------------------------------------------

A couple morelinks for you one (very very long) has pictures of these shafts. The "strozzare" means to choke (like being strangulated), therefore an otherwise even tube that is narrowed at one point would be my guess.. Good luck!! :o)

http://www.dnr.state.oh.us/mineral/coal/miningfactsht.htm

http://images.search.yahoo.com/search/images/view?back=http:...

--------------------------------------------------
Note added at 3 days23 hrs (2006-11-02 13:35:55 GMT)
--------------------------------------------------

I really think you need to flip it..

sustaining or retaining , even transversal pillars are left/put/carved in place, in the descent that follows the ore, at points containing little or no mineral deposis /or in locations where little or no mineral deposits are found

--------------------------------------------------
Note added at 3 days23 hrs (2006-11-02 13:39:16 GMT)
--------------------------------------------------

Heading would be
forming/placement/of the load bearing pillars

Good luck!!


    Reference: http://www.alphanr.com/Operations.aspx
Rosanna Palermo
Local time: 05:00
Native speaker of: Native in ItalianItalian, Native in EnglishEnglish
PRO pts in category: 2
Grading comment
Thanks for your help! I spoke to the client and after much deliberation we decided on: underhand stoping (without supports).
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