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India
Mainpat Mine

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 Location:
37 km S from Ambikapur, India

  Address:
M/s Bharat Aluminium Company Limited, Engineering Building, BALCO Nagar,
Korba
India
495684
Phone  ...  Subscription required
Fax07759-255043
EmailEmail
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Fleet
  • Personnel
  • Filings & News

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Overview

StatusTemporary Suspension
Mine TypeOpen Pit
Commodities
  • Bauxite
Mining Method
  • Truck & Shovel / Loader
  • Backfill
Production Start...
Mine Life8.8 years (as of Jan 1, 2018)
The mining operation is temporarily discontinued at the Mainpat mine since 11.10.2019 for uneconomic operations.


Owners

Source: p. 78,134
CompanyInterestOwnership
Vedanta Resources plc. 33.25 % Indirect
Government of India 49 % Indirect
Bharat Aluminium Co. Ltd. (BALCO) (operator) 51 % Direct

Contractors

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Deposit Type

  • Laterite
  • Bauxite


Summary:

Regional geology.
Areas are mostly covered by soil or laterite / bauxite capping. The low plateau consists of rocks of Achaean age. These include mica schist and quartzites, calc silicate rocks, amphibolites, granite and granite gneiss, pegmatite’s and quartz veins. Immediately overlying the Achaeans with an unconformity occur over rocks of Gondwana age consisting of coarse ferruginous sandstone and conglomerate. The Gondwana’s are overlain by Lameta with an unconformity. The Lameta starts with conglomerate at the base and other rock units include ferruginous grits, sometimes with shaly & clayey partings and calcareous grits. Overlying the Lameta occur almost horizontal Deccan Trap basalts which are massive, dark grey, hard and compact, finally overlying this trap rock occurs laterite with lithomarge clays and weathered basalts in between.

Local Geology.
The bauxite occurs in lensoid form within the laterite horizon which comprises various recognizable lithologic units.

The zone of lithomarge is quite distinctive and well defined and forms the lowest horizon of the laterite profile. It occurs just above the trap and thus separates it at few places in deep nalla beds and also along the scarps. The lithomarge is quite soft and plastic in nature. The average thickness of this zone is varies from 1.5 to 3.5 m.

The bauxite occurs in lensoid forms in laterite profile, generally below soil and pisolitic laterite. The bauxite can be put in ........


Mining Methods

  • Truck & Shovel / Loader
  • Backfill


Summary:

All mining and transportation at the mine are undertaken by contractors.

The bauxite deposit of Mainpat Bauxite mines is situated over the plateau and the surface terrain is generally flat.

As the Bauxite deposit is found in shallow depth ranging from 0.40-10.0 meter, the method of mining of Bauxite is mechanized opencast mining, crushing, sizing, and sorting, by using excavator of 1- 5 Cum bucket size, dumper of 15-25 tons capacity, water sprinkler, blast hole drill machine, 100 mm dia, dozer, grader, crusher, screens and belt conveyor etc.

The over burden is top soil & soft laterite of 0 to 3.00 meters thickness after which there is a hard overburden of thickness varying from 0 to 5.70 meters. The thickness of ore zone is 0.40 m to 4 m. In general working is of shallow depth of avg. 4 to 5 m (maximum 10 m).

The general practice is to scrap the top soil separately by dozer or excavator dumper combination and use it for directly spreading over already backfilled compacted area. Drilling and blasting is practiced in hard OB benches and ore benches. Excavation is done by excavator dumper combination.

Since the deposits are strata-bound irregular and bouldery in nature, bauxite needs to be separated from laterite and murrum. It is proposed to mechanically crush and screen the ore so as to obtain desired grade bauxite with acceptable silica content. The backfilling is done in same sequence as it is found in the nature, i.e. ........


Crushing and Grinding


Processing

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Summary:

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Production:

CommodityUnits2020201820172016
Bauxite kt  ......  Subscription required589,32073,170455
All production numbers are expressed as ore.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120182017
Annual mining capacity  ......  Subscription required
Stripping / waste ratio  ......  Subscription required1.14 6.37
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Reserves at March 31, 2020:
The Mineral Resources as at 31th March 2022 at Mainpat Mine are unchanged from 31th March 2020.

CategoryTonnage CommodityGrade
Proven & Probable 4.6 Mt Aluminum 43.6 %
Measured & Indicated 6.2 Mt Aluminum 40.4 %
Inferred 1.3 Mt Aluminum 42.1 %



Heavy Mobile Equipment as of March 14, 2022:
HME TypeSizeQuantityLeased or
Contractor
Drill 100 mm ....................... Subscription required Leased
Excavator 3 cu. m ....................... Subscription required Leased
Excavator 2 cu. m ....................... Subscription required Leased
Loader 2.5 cu. m ....................... Subscription required Leased
Rockbreaker ....................... Subscription required Leased
Truck (dump) 35 t ....................... Subscription required Leased
Truck (service) ....................... Subscription required Leased
Truck (water) 20000 l ....................... Subscription required Leased
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Mine Management:

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

DocumentYear
Integrated Report 2022
Other 2022
................................... Subscription required 2020
................................... Subscription required 2019
Annual Report 2018
Other 2017
Technical Report 2016
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