1991
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Member, District Council, Ernakulam, Kerala
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1995 - 1999
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Member, Bihar Legislative Assembly
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1999
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Elected to 13th Lok Sabha
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1999-2000
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Member, Standing Committee on Science and Technology, Environment and Forests
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2000-2004
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Member, Consultative Committee, Ministry of Railways
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2009
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Member, Jharkhand Legislative Assembly
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Chief Whip, Jharkhand Vidhan Sabha
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May, 2014
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Re-elected to 16th Lok Sabha (2nd term)
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1 Sep. 2014 onwards
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Member, Committee on Papers Laid on the Table.
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Member, Standing Committee on Science & Technology, Environment & Forests
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Member, Consultative Committee, Ministry of Steel and Mines
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