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Till 1977
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Joint Secretary, Bharatiya Jana Sangh, Bihar
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1977
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Elected to 6th Lok Sabha
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1977-79
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Chairman, Sub-Committee on Hindi, Department of Steel and Mines
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Union Minister of State, Steel and Mines
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1980 onwards
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Member, Central Working Committee, Bharatiya Janata Party (B.J.P.)
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1982-84
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Member, Bihar Legislative Assembly
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Member, Tribal Welfare Committee
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1989
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Re-elected to 9th Lok Sabha (2nd term)
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1990-91
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Member, Standing Committee on Science and Technology; and Environment and Forests
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Member, Consultative Committee, Ministry of Industry
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1991
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Re-elected to 10th Lok Sabha (3rd term)
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1991-93
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Member, Committee on the Welfare of Scheduled Castes and
Scheduled Tribes
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1992 onwards
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President, Tribal Cell, B.J.P.
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1994-96
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Member, Standing Committee on Urban and Rural Development
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1994-98
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President, All India Scheduled Tribes Front, B.J.P.
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1996
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Re-elected to 11th Lok Sabha (4th term)
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16 May-1 Jun. 1996
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Union Cabinet Minister, Welfare
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1996-97
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Member, Committee on the Welfare of Scheduled Castes and Scheduled Tribes
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Member, Standing Committee on Energy
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Member, Consultative Committee, Ministry of Energy
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1998
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Re-elected to 12th Lok Sabha (5th term)
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1998-99
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Chairman, Committee on the Welfare of Scheduled Castes and Scheduled
Tribes; and its Sub-Committee on Monitoring and Implementation of reservation
orders in respect of SCs and STs
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Member, Standing Committee on Food, Civil Supplies and Public Distribution; and its Sub-Committee-B on Department of Sugar and Edible Oils
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Member, General Purposes Committee
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Member, Consultative Committee, Ministry of Civil Aviation
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1999
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Re-elected to 13th Lok Sabha (6th term)
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1999-2000
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Member, Standing Committee on Communications
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2000-2001
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Member, Committee on the Welfare of Scheduled Castes and Scheduled Tribes
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2000- Sep. 2001
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Member, Consultative Committee, Ministry of Mines and Minerals
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1 Sep. 2001 - 29 Jan. 2003
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Union Cabinet Minister, Agro and Rural Industries
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29 Jan. 2003 - 09 Jan. 2004
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Union Cabinet Minister, Coal
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9 Jan. 2004-22 May 2004
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Minister, Non-Conventional Energy Sources
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2005-2009
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Member, Jharkhand Vidhan Sabha
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2009
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Re-elected to 15th Lok Sabha (7th term)
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8 Jun. 2009
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Deputy Speaker, Lok Sabha
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04 Sep. 2009
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Chairman, Joint Committee on Security in Parliament Complex
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10 Sep. 2009
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Chairman, Committee on Budget
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23 Sep. 2009
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Chairman, Committee on Private Members` Bills and Resolutions
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Chairman, Library Committee
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19 Oct. 2009
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Member, General Purposes Committee
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21 Dec. 2009
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Chairman, Committee on Provision of Computers for MPs, Offices of Political Parties in Lok Sabha and Officers of Lok Sabha Secretariat
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Vice-President, Executive Committee of Indian Parliamentary Group
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Vice-President, Parliamentary Forum on Children
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Vice-President, Parliamentary Forum on Water Conservation and Management
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Vice-President, Parliamentary Forum on Youth
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Vice-President, Parliamentary Forum on Population and Public Health
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Vice-President, Parliamentary Forum on Global Warming and Climate Change
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May, 2014
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Re-elected to 16th Lok Sabha (8th term)
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14 Aug. 2014 - 30 April 2016
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Member Committee on Welfare of Scheduled Castes and Scheduled Tribes
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1 Sep. 2014 onwards
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Member, Standing Committee on Social Justice and Empowerment
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Member, Consultative Committee, Ministry of Coal
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15 Sep. 2014 onwards
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Member, Committee on Ethics
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