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India
Goa Operation (Bicholim Mine, Codli Mine, Sonshi Mine, Surla Mine)

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 Location:
17 km NE from Margao, India

  Address:
Sesa Ghor, 20 EDC Complex, Patto
Panaji
India
403001
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Fax+91-832-246-0690
WebsiteWeb
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Overview

StatusTemporary Suspension
Mine TypeOpen Pit
Commodities
  • Iron Ore
Mining Method
  • Truck & Shovel / Loader
Production Start...
Vedanta Limited’s iron ore operations in Goa consist of four major iron ore mines, namely Codli, Sonshi, Bicholim and Surla.

Goa operations remained suspended during the year due to state-wide directive from the Hon’ble Supreme Court, continuous engagement with the stakeholders for a resumption of mining operations.


Owners

Source: p. 78
CompanyInterestOwnership
Vedanta Resources plc. 65.2 % Indirect
Vedanta ltd. (operator) 100 % Indirect

Contractors

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Deposit Type

  • Laterite


Summary:

At the Codli mines, the lower grade iron formation is folded and subsequently eroded into basinal areas amenable to open-pit mining. Economically mineable material occurs over an area of about 3.1 km by 1.6 km and is located between 84 metres above sea level and 50 metres below sea level. The formations show a general northwest-southeast trend with shallow to moderate dips towards the northeast with local reversals. The footwall is comprised manganiferous clay and decomposed quartzites and the stratigraphy of the ore body is cross cut by late dolerite dykes and sills which are manifested by pink clayey zones in the mine area.

The area surrounding the Sonshi mine is covered with laterite capping underlain by lumpy ore zone. The ore deposit at the Sonshi mine forms the northern limb of the northwest-southeast trending syncline. The formations dip 50 degrees to 60 degrees northeast. The principal deposit of the Sonshi mine comprises three distinct ore bodies that are folded into a syncline. The youngest ore body has a width of 50 metres, while the other ore bodies dip steeply to the northeast and have widths of approximately 20 metres to 25 metres. The intervening parting between the ore bodies comprised 50 metres of manganiferous clay and a 30 metre wide limonitic zone separating one ore body from the footwall phyllite. The depth extent of these bands has been outlined with deep drilling. Hematite is the major economic mineral in each of the bands.

Bicholi ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Goa mines are multi-pit, multi-lease fully mechanised mining units.

Codli.
The open-pits have a bench height of seven metres, haulage roads of 25 metres width and an overall pit slope of 26 degrees. The Codli mines have 14 basins, of which five pits have been exhausted. The lateritic overburden is removed either by ripping or dozing, and loaded by excavators and/or wheel loaders into heavy earth moving machinery such as rigid dumpers and articulated dumpers. Hauling within the mine is also done by rigid and articulated dumpers. An ore stockpile is maintained at all times to continuously feed the processing plants.

Sonshi.
The hard laterite capping is loosened either by drilling, blasting or ripping/dozing. The soft sub-lateritic zone is excavated and transported to respective laterite, clay and ore stacks.

Bicholim.
Backhoe excavators of 1.1m3 bucket capacity are used for excavation of ROM material. Development in waste is also without drilling & blasting with the use of dozers. There are six dozers of 520, 570, 855hp, 10 backhoe of 428hp, 13 wheel loaders of 330 hp, 30 dumpers of 400hp and 6 dumpers of 350hp. All these machineries are common for Bicholim mine.

Maximum bench height is upto 6-7m. There are 10 benches in waste/OB and 7 benches in ore of which few are common due to trend of mineralisation. Working Pit top RL is 138m and bottom RL is 72m.


Crushing and Grinding


Processing

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Summary:

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Production:

CommodityUnits2019201820172016
Iron M dmt  ......  Subscription required4.98.82
All production numbers are expressed as ore.
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Operational Metrics:

Metrics2019
Annual mining capacity 5.5 Mt

Reserves at March 31, 2017:

CategoryTonnage CommodityGrade
Proven 74.7 Mt Iron 54.1 %
Probable 69.8 Mt Iron 56.2 %
Proven & Probable 144.6 Mt Iron 55.1 %
Measured 51.8 Mt Iron
Indicated 50.6 Mt Iron
Inferred 11.6 Mt Iron
Total Resource 114 Mt Iron



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 6, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 6, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 6, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 6, 2022
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Corporate Filings & Presentations:

DocumentYear
Integrated Report 2022
................................... Subscription required 2021
................................... Subscription required 2019
Annual Report 2018
Annual Review 2017
Annual Review 2017
Annual Review 2016
Annual Review 2013
Subscription required - Subscription is required.

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