Exhibit 24.1

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS

WHEREAS, ALCAN INC., a Canadian corporation (the "Company"), proposes shortly to file with the Securities and Exchange Commission, under the provisions of the Securities Act of 1934 as amended (the "Act"), the Annual Report on Form 10-K pursuant to Section 13 or 15 (d) of the Act.

WHEREAS, the undersigned is an Officer and/or a Director of the Company as indicated below;

NOW, THEREFORE, the undersigned hereby constitutes and appoints R. Millington, D. McAusland and P. Chenard and each of them, as attorneys for the undersigned and in the undersigned's name, place and stead, and in each of the undersigned's offices and capacities as an Officer and/or a Director of the Company, to execute and file such Annual Report on Form 10-K, hereby giving and granting to said attorneys full power and authority to do and perform all and every act and thing whatsoever requisite and necessary to be done in and about the premises as fully, to all intents and purposes, as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of March 2006.

Signed:   /s/ L. Denis Desautels                                               
Name:    L. Denis Desautels
Title:       Director

Exhibit 24.2

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS

WHEREAS, ALCAN INC., a Canadian corporation (the "Company"), proposes shortly to file with the Securities and Exchange Commission, under the provisions of the Securities Act of 1934 as amended (the "Act"), the Annual Report on Form 10-K pursuant to Section 13 or 15 (d) of the Act.

WHEREAS, the undersigned is an Officer and/or a Director of the Company as indicated below;

NOW, THEREFORE, the undersigned hereby constitutes and appoints R. Millington, D. McAusland and P. Chenard and each of them, as attorneys for the undersigned and in the undersigned's name, place and stead, and in each of the undersigned's offices and capacities as an Officer and/or a Director of the Company, to execute and file such Annual Report on Form 10-K, hereby giving and granting to said attorneys full power and authority to do and perform all and every act and thing whatsoever requisite and necessary to be done in and about the premises as fully, to all intents and purposes, as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of March 2006.

Signed:   /s/ Richard B. Evans                                                           
Name:    Richard B. Evans
Title:       Director, Executive Vice President and Chief Operating Officer

 Exhibit 24.3

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS

WHEREAS, ALCAN INC., a Canadian corporation (the "Company"), proposes shortly to file with the Securities and Exchange Commission, under the provisions of the Securities Act of 1934 as amended (the "Act"), the Annual Report on Form 10-K pursuant to Section 13 or 15 (d) of the Act.

WHEREAS, the undersigned is an Officer and/or a Director of the Company as indicated below;

NOW, THEREFORE, the undersigned hereby constitutes and appoints R. Millington, D. McAusland and P. Chenard and each of them, as attorneys for the undersigned and in the undersigned's name, place and stead, and in each of the undersigned's offices and capacities as an Officer and/or a Director of the Company, to execute and file such Annual Report on Form 10-K, hereby giving and granting to said attorneys full power and authority to do and perform all and every act and thing whatsoever requisite and necessary to be done in and about the premises as fully, to all intents and purposes, as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of March 2006.

Signed:   /s/ L. Yves Fortier                                               
Name:    L. Yves Fortier
Title:       Director

Exhibit 24.4

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS

WHEREAS, ALCAN INC., a Canadian corporation (the "Company"), proposes shortly to file with the Securities and Exchange Commission, under the provisions of the Securities Act of 1934 as amended (the "Act"), the Annual Report on Form 10-K pursuant to Section 13 or 15 (d) of the Act.

WHEREAS, the undersigned is an Officer and/or a Director of the Company as indicated below;

NOW, THEREFORE, the undersigned hereby constitutes and appoints R. Millington, D. McAusland and P. Chenard and each of them, as attorneys for the undersigned and in the undersigned's name, place and stead, and in each of the undersigned's offices and capacities as an Officer and/or a Director of the Company, to execute and file such Annual Report on Form 10-K, hereby giving and granting to said attorneys full power and authority to do and perform all and every act and thing whatsoever requisite and necessary to be done in and about the premises as fully, to all intents and purposes, as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of March 2006.

Signed:   /s/ Jean-Paul Jacamon                                               
Name:    Jean-Paul Jacamon
Title:       Director

Exhibit 24.5

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS

WHEREAS, ALCAN INC., a Canadian corporation (the "Company"), proposes shortly to file with the Securities and Exchange Commission, under the provisions of the Securities Act of 1934 as amended (the "Act"), the Annual Report on Form 10-K pursuant to Section 13 or 15 (d) of the Act.

WHEREAS, the undersigned is an Officer and/or a Director of the Company as indicated below;

NOW, THEREFORE, the undersigned hereby constitutes and appoints R. Millington, D. McAusland and P. Chenard and each of them, as attorneys for the undersigned and in the undersigned's name, place and stead, and in each of the undersigned's offices and capacities as an Officer and/or a Director of the Company, to execute and file such Annual Report on Form 10-K, hereby giving and granting to said attorneys full power and authority to do and perform all and every act and thing whatsoever requisite and necessary to be done in and about the premises as fully, to all intents and purposes, as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of March 2006.

Signed:   /s/ William R. Loomis, Jr.                                               
Name:    William R. Loomis, Jr.
Title:       Director

Exhibit 24.6

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS

WHEREAS, ALCAN INC., a Canadian corporation (the "Company"), proposes shortly to file with the Securities and Exchange Commission, under the provisions of the Securities Act of 1934 as amended (the "Act"), the Annual Report on Form 10-K pursuant to Section 13 or 15 (d) of the Act.

WHEREAS, the undersigned is an Officer and/or a Director of the Company as indicated below;

NOW, THEREFORE, the undersigned hereby constitutes and appoints R. Millington, D. McAusland and P. Chenard and each of them, as attorneys for the undersigned and in the undersigned's name, place and stead, and in each of the undersigned's offices and capacities as an Officer and/or a Director of the Company, to execute and file such Annual Report on Form 10-K, hereby giving and granting to said attorneys full power and authority to do and perform all and every act and thing whatsoever requisite and necessary to be done in and about the premises as fully, to all intents and purposes, as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of March 2006.

Signed:   /s/ Yves Mansion                                               
Name:    Yves Mansion
Title:       Director

Exhibit 24.7

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS

WHEREAS, ALCAN INC., a Canadian corporation (the "Company"), proposes shortly to file with the Securities and Exchange Commission, under the provisions of the Securities Act of 1934 as amended (the "Act"), the Annual Report on Form 10-K pursuant to Section 13 or 15 (d) of the Act.

WHEREAS, the undersigned is an Officer and/or a Director of the Company as indicated below;

NOW, THEREFORE, the undersigned hereby constitutes and appoints R. Millington, D. McAusland and P. Chenard and each of them, as attorneys for the undersigned and in the undersigned's name, place and stead, and in each of the undersigned's offices and capacities as an Officer and/or a Director of the Company, to execute and file such Annual Report on Form 10-K, hereby giving and granting to said attorneys full power and authority to do and perform all and every act and thing whatsoever requisite and necessary to be done in and about the premises as fully, to all intents and purposes, as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of March 2006.

Signed:   /s/ Gwyn Morgan                                               
Name:    Gwyn Morgan
Title:       Director

Exhibit 24.8

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS

WHEREAS, ALCAN INC., a Canadian corporation (the "Company"), proposes shortly to file with the Securities and Exchange Commission, under the provisions of the Securities Act of 1934 as amended (the "Act"), the Annual Report on Form 10-K pursuant to Section 13 or 15 (d) of the Act.

WHEREAS, the undersigned is an Officer and/or a Director of the Company as indicated below;

NOW, THEREFORE, the undersigned hereby constitutes and appoints R. Millington, D. McAusland and P. Chenard and each of them, as attorneys for the undersigned and in the undersigned's name, place and stead, and in each of the undersigned's offices and capacities as an Officer and/or a Director of the Company, to execute and file such Annual Report on Form 10-K, hereby giving and granting to said attorneys full power and authority to do and perform all and every act and thing whatsoever requisite and necessary to be done in and about the premises as fully, to all intents and purposes, as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of March 2006.

Signed:   /s/ Christine Morin-Postel                                               
Name:    Christine Morin-Postel
Title:       Director

Exhibit 24.9

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS

WHEREAS, ALCAN INC., a Canadian corporation (the "Company"), proposes shortly to file with the Securities and Exchange Commission, under the provisions of the Securities Act of 1934 as amended (the "Act"), the Annual Report on Form 10-K pursuant to Section 13 or 15 (d) of the Act.

WHEREAS, the undersigned is an Officer and/or a Director of the Company as indicated below;

NOW, THEREFORE, the undersigned hereby constitutes and appoints R. Millington, D. McAusland and P. Chenard and each of them, as attorneys for the undersigned and in the undersigned's name, place and stead, and in each of the undersigned's offices and capacities as an Officer and/or a Director of the Company, to execute and file such Annual Report on Form 10-K, hereby giving and granting to said attorneys full power and authority to do and perform all and every act and thing whatsoever requisite and necessary to be done in and about the premises as fully, to all intents and purposes, as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of March 2006.

Signed:   /s/ H. Onno Ruding                                               
Name:    H. Onno Ruding
Title:       Director

Exhibit 24.10

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS

WHEREAS, ALCAN INC., a Canadian corporation (the "Company"), proposes shortly to file with the Securities and Exchange Commission, under the provisions of the Securities Act of 1934 as amended (the "Act"), the Annual Report on Form 10-K pursuant to Section 13 or 15 (d) of the Act.

WHEREAS, the undersigned is an Officer and/or a Director of the Company as indicated below;

NOW, THEREFORE, the undersigned hereby constitutes and appoints R. Millington, D. McAusland and P. Chenard and each of them, as attorneys for the undersigned and in the undersigned's name, place and stead, and in each of the undersigned's offices and capacities as an Officer and/or a Director of the Company, to execute and file such Annual Report on Form 10-K, hereby giving and granting to said attorneys full power and authority to do and perform all and every act and thing whatsoever requisite and necessary to be done in and about the premises as fully, to all intents and purposes, as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of March 2006.

Signed:   /s/ Guy Saint-Pierre                                               
Name:    Guy Saint-Pierre
Title:       Director

Exhibit 24.11

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS

WHEREAS, ALCAN INC., a Canadian corporation (the "Company"), proposes shortly to file with the Securities and Exchange Commission, under the provisions of the Securities Act of 1934 as amended (the "Act"), the Annual Report on Form 10-K pursuant to Section 13 or 15 (d) of the Act.

WHEREAS, the undersigned is an Officer and/or a Director of the Company as indicated below;

NOW, THEREFORE, the undersigned hereby constitutes and appoints R. Millington, D. McAusland and P. Chenard and each of them, as attorneys for the undersigned and in the undersigned's name, place and stead, and in each of the undersigned's offices and capacities as an Officer and/or a Director of the Company, to execute and file such Annual Report on Form 10-K, hereby giving and granting to said attorneys full power and authority to do and perform all and every act and thing whatsoever requisite and necessary to be done in and about the premises as fully, to all intents and purposes, as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of March 2006.

Signed:   /s/ Gerhard Schulmeyer                                               
Name:    Gerhard Schulmeyer
Title:       Director

Exhibit 24.12

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS

WHEREAS, ALCAN INC., a Canadian corporation (the "Company"), proposes shortly to file with the Securities and Exchange Commission, under the provisions of the Securities Act of 1934 as amended (the "Act"), the Annual Report on Form 10-K pursuant to Section 13 or 15 (d) of the Act.

WHEREAS, the undersigned is an Officer and/or a Director of the Company as indicated below;

NOW, THEREFORE, the undersigned hereby constitutes and appoints R. Millington, D. McAusland and P. Chenard and each of them, as attorneys for the undersigned and in the undersigned's name, place and stead, and in each of the undersigned's offices and capacities as an Officer and/or a Director of the Company, to execute and file such Annual Report on Form 10-K, hereby giving and granting to said attorneys full power and authority to do and perform all and every act and thing whatsoever requisite and necessary to be done in and about the premises as fully, to all intents and purposes, as the undersigned might or could do if personally present at the doing thereof, hereby ratifying and confirming all that said attorneys may or shall lawfully do, or cause to be done, by virtue hereof.

IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of March 2006.

Signed:   /s/ Paul M. Tellier                                               
Name:    Paul M. Tellier
Title:       Director