EXHIBIT 24.1

POWER OF ATTORNEY

I hereby constitute and appoint William J. Leatherberry and Jesse E. Gary as my true and lawful attorney-in-fact and agent, with full power of substitution, for me and in my name, in any and all capacities, to sign on my behalf the Annual Report on Form 10-K of Century Aluminum Company for the fiscal year ended December 31, 2012, and any amendment or supplement thereto; and to file such Annual Report on Form 10-K, and any such amendment or supplement, with the Securities and Exchange Commission and any other appropriate agency pursuant to applicable laws and regulations.

IN WITNESS WHEREOF, I have hereunto set my hand this 4^th day of December, 2012.

/s/ Terence Wilkinson

Terence Wilkinson

Director

Century Aluminum Company

POWER OF ATTORNEY

I hereby constitute and appoint William J. Leatherberry and Jesse E. Gary as my true and lawful attorney-in-fact and agent, with full power of substitution, for me and in my name, in any and all capacities, to sign on my behalf the Annual Report on Form 10-K of Century Aluminum Company for the fiscal year ended December 31, 2012, and any amendment or supplement thereto; and to file such Annual Report on Form 10-K, and any such amendment or supplement, with the Securities and Exchange Commission and any other appropriate agency pursuant to applicable laws and regulations.

IN WITNESS WHEREOF, I have hereunto set my hand this 4^th day of December, 2012.

/s/ Jarl Berntzen

Jarl Berntzen

Director

Century Aluminum Company

POWER OF ATTORNEY

I hereby constitute and appoint William J. Leatherberry and Jesse E. Gary as my true and lawful attorney-in-fact and agent, with full power of substitution, for me and in my name, in any and all capacities, to sign on my behalf the Annual Report on Form 10-K of Century Aluminum Company for the fiscal year ended December 31, 2012, and any amendment or supplement thereto; and to file such Annual Report on Form 10-K, and any such amendment or supplement, with the Securities and Exchange Commission and any other appropriate agency pursuant to applicable laws and regulations.

IN WITNESS WHEREOF, I have hereunto set my hand this 4^th day of December, 2012.

/s/ Andrew Caplan

Andrew Caplan

Director

Century Aluminum Company

POWER OF ATTORNEY

I hereby constitute and appoint William J. Leatherberry and Jesse E. Gary as my true and lawful attorney-in-fact and agent, with full power of substitution, for me and in my name, in any and all capacities, to sign on my behalf the Annual Report on Form 10-K of Century Aluminum Company for the fiscal year ended December 31, 2012, and any amendment or supplement thereto; and to file such Annual Report on Form 10-K, and any such amendment or supplement, with the Securities and Exchange Commission and any other appropriate agency pursuant to applicable laws and regulations.

IN WITNESS WHEREOF, I have hereunto set my hand this 4^th day of December, 2012.

/s/ Daniel Goldberg

Daniel Goldberg

Director

Century Aluminum Company

POWER OF ATTORNEY

I hereby constitute and appoint William J. Leatherberry and Jesse E. Gary as my true and lawful attorney-in-fact and agent, with full power of substitution, for me and in my name, in any and all capacities, to sign on my behalf the Annual Report on Form 10-K of Century Aluminum Company for the fiscal year ended December 31, 2012, and any amendment or supplement thereto; and to file such Annual Report on Form 10-K, and any such amendment or supplement, with the Securities and Exchange Commission and any other appropriate agency pursuant to applicable laws and regulations.

IN WITNESS WHEREOF, I have hereunto set my hand this 4^th day of December, 2012.

/s/ Peter C. Jones

Peter C. Jones

Director

Century Aluminum Company

POWER OF ATTORNEY

I hereby constitute and appoint William J. Leatherberry and Jesse E. Gary as my true and lawful attorney-in-fact and agent, with full power of substitution, for me and in my name, in any and all capacities, to sign on my behalf the Annual Report on Form 10-K of Century Aluminum Company for the fiscal year ended December 31, 2012, and any amendment or supplement thereto; and to file such Annual Report on Form 10-K, and any such amendment or supplement, with the Securities and Exchange Commission and any other appropriate agency pursuant to applicable laws and regulations.

IN WITNESS WHEREOF, I have hereunto set my hand this 5^th day of December, 2012.

/s/ Steven Kalmin

Steven Kalmin

Director

Century Aluminum Company

POWER OF ATTORNEY

I hereby constitute and appoint William J. Leatherberry and Jesse E. Gary as my true and lawful attorney-in-fact and agent, with full power of substitution, for me and in my name, in any and all capacities, to sign on my behalf the Annual Report on Form 10-K of Century Aluminum Company for the fiscal year ended December 31, 2012, and any amendment or supplement thereto; and to file such Annual Report on Form 10-K, and any such amendment or supplement, with the Securities and Exchange Commission and any other appropriate agency pursuant to applicable laws and regulations.

IN WITNESS WHEREOF, I have hereunto set my hand this 4^th day of December, 2012.

/s/ Andrew Michelmore

Andrew Michelmore

Director

Century Aluminum Company

POWER OF ATTORNEY

I hereby constitute and appoint William J. Leatherberry and Jesse E. Gary as my true and lawful attorney-in-fact and agent, with full power of substitution, for me and in my name, in any and all capacities, to sign on my behalf the Annual Report on Form 10-K of Century Aluminum Company for the fiscal year ended December 31, 2012, and any amendment or supplement thereto; and to file such Annual Report on Form 10-K, and any such amendment or supplement, with the Securities and Exchange Commission and any other appropriate agency pursuant to applicable laws and regulations.

IN WITNESS WHEREOF, I have hereunto set my hand this 4^th day of December, 2012.

/s/ John P. O’Brien

John P. O’Brien

Director

Century Aluminum Company