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GEOLOGY OF MAKUM COALFIELDS

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                          COAL RESERVES upto 300m depth (Million Tonnes)

Location

Opencast

Underground

Total

Tikak Command Area

24.37

21.10

45.47

Tirap Command Area

18.80

75.61

94.41

Tipong Command Area

24.22

50.44

74.66

 

 

MINING TECHNOLOGY DURING AR &T CO. AND AFTER NATIONALISATION

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From 1985, the following Russian methods of mining suitable to geo-mining conditions of Makum coalfields were started under the guidance from erstwhile USSR experts.

                      C.K.Shield method

                      Non-Sectional shield method

                      Sectional Shield method

                      Flexible roofing method

The above mentioned methods increased the percentage of extraction upto 80% and increased the life of mine, removing the fire problem to a great extent. With the passage of time, unfortunately these said methods could not be continued for the following reasons.

                      The said methods requires high consumption of different types of timber and the supply of timber initially found to be adequate and later on supply was totally stopped due to Supreme Court order in respect of felling of trees.

                      Non- availability/ untimely supply of indigenous materials as required.

                      Non- availability of spare parts of different equipments.

                      Reduction of highly skilled persons for said methods of mining.   

Lastly, Tipong Method of Mining was being carried out in the three underground mines of NEC i.e. Baragolai UG Mine, Ledo UG Mine, Tipong UG Mine. However, after a mine accident at Ledo UG Mine, DGMS has withdrawn the permission for Tipong Method of Mining and directed to explore other suitable methods of mining. Under the aegis of Indo-European working group on coal and Ministry of Coal, a project report for Tipong Colliery is under preparation for implementation of underground mining technology as practiced in Spain(Sub-level Caving method) for similar coal formation. Presently only gallery development in stone and coal with limited numbers of headings is being carried out at Tipong to reach the boundary of the mine along of -7 Level horizon.

 

    Opencast Mine Operation of NEC and existing Status

The first Mechanized Opencast Mine of NEC came up in 1978 at Tikak when CMPDI prepared a Project Report on Baragolai OCP Hill Top Block. Thereafter, Tirap Opencast Mine started operation in 1984 and Ledo Opencast Mine started operation in 2008. The total present installed capacity of the Opencast Mine-

    Tirap Opencast Mine 0.5 Million Tonnes per year.

    Tikak Opencast Mine 0.4 Million Tonnes per year.

    Ledo Opencast Mine 0.15 Million Tonnes per year.

 

Both Coal and Overburden are being worked by Shovel-Dumper Combination. Due to high inclination and hilly terrain stripping ratio of mines goes as high as 11 cum. of overburden per Tonne of coal. Overburden removal and coal winning in all the opencast mines are outsourced.

North Eastern Coalfields have been made the 'Designated Custodian' of Namchik Namphuk Coal Mines (Arunachal Pradesh) as per Coal Mines (Special Provisions) 2nd Ordinance as per the directive of Ministry of Coal and Chairman Coal India Ltd wef 01.04.2015. Process of operating the mines on behalf of Central Government is in progress.

 

    Coal Supply Agreement between NEC & NTPC for Bongaigaon TPS Unit 1 & 2 of Assam

 

Agreement made on 8th August, 2013 between NEC and NTPC based on Letter of Assurance dated 30.05.2011. Bongaigaon TPS is going through a modernization process and the 1st Unit is expected to commence from 1st July 2014 and the 2nd Unit is expected to commence from 31st Mar 2015. Coal requirement for both the units is @0.625 Million Tonnes per unit/year, or a total 1.25 MTY per year from 2015 onwards for a period of 20 years. The modernization of the TPS and the Fuel supply agreement with NEC is as per Prime Ministers initiative in the year 2006, during the visit to Margherita by Dr.Manmohan Singh.

 

    FUTURE SCENARIO OF NEC WITH RESPECT TO ITS COAL PRODUCTION LEVEL

 

In order to meet the future demand of NE coal for proposed Bongaigaon Thermal power Plant and coal to oil conversion (CTL), following jobs have been taken up by NEC management.

1) Re-structuring of existing Tipong U/G mine.
2) To open Lekhapani open cast project
3) To open Tikak extension open cast project
4) To start Tirap phase II open cast project
5) To open Tipong open cast project.

 

    Corporate Social Responsibility

    Measures taken under CSR

  1)Welfare measures for the community at large including employees and their families, so as to ensure the poorer sections of the society derive max benefits.
2) Take care of landless and project affected persons. Proper rehabilitation of land ousters/displaced persons based on R&R policies separately formulated and the expenditure of R&R issues are included in the Project Cost.
3)Contribution to the society at large by way of social & cultural development, imparting education, training and social awareness specially with regard to the economically backward class for their development and generation of income to avoid any liability of employment.
4)Protection and safeguard of environment and maintaining ecological balance.

    SOCIO-ENVIRONMENTAL SCENARIO

Besides extracting coal, North Eastern Coalfields is committed to preserve flora and fauna in its project affected areas, apart from checking and maintaining the environment pollutants within permissible limit. Further, NEC has developed socially relevant parks and centre, enchanting the glamour and prominence of the coal mining town of Margherita.

Various parks and centre developed by North Eastern Coalfields are :-
1) Butterfly Park at Tikak colliery.
2) Orchid garden at Tikak colliery.
3) Coal Heritage Park and Museum at Margherita.
4) Dr. Bhupen Hazarika children park at Margherita.
5) Cultural Centre at Margherita.

With the passage of time, advancement of technology and increasing market demand of NE coal, North Eastern Coalfields (NEC) shall strive to mine out the "Black Diamond" efficiently and effectively with due regard to safety, quality ,conservation and environment to meet the coal demand in the years to come.

 

SAVE COAL   ,    SAVE NATION

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