<PAGE>

                                                                Exhibit No. 24.1
                                                                ----------------


                               POWER OF ATTORNEY
                               -----------------


The undersigned, as a director and/or an officer of ABC-NACO Inc. (the
"Company"), does hereby constitute and appoint Vaughn W. Makary and J. P.
Singsank, and each of them, as his true and lawful attorney-in-fact and agent,
with full power of substitution and re-substitution, for him and in his name,
place and stead, in any and all capacities, to sign the Company's Annual Report
on Form 10-K for the Calendar Year 2000 ended December 31, 2000 and any and all
amendments thereto, and to file the same, with exhibits and schedules thereto,
and other documents therewith, with the Securities and Exchange Commission,
granting unto said attorneys-in-fact, full power and authority to do and perform
each and every act and thing necessary or desirable to be done in and about the
premises, as fully to all intents and purposes as he might or could do in
person, thereby ratifying and confirming all that said attorneys-in-fact, or his
substitute, may lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, I have hereunto set my hand this 17th day of April, 2001.



                                /s/ Daniel W. Duval
                              -----------------------
                                   Daniel W. Duval
<PAGE>

                               POWER OF ATTORNEY
                               -----------------


The undersigned, as a director and/or an officer of ABC-NACO Inc. (the
"Company"), does hereby constitute and appoint Vaughn W. Makary and J. P.
Singsank, and each of them, as his true and lawful attorney-in-fact and agent,
with full power of substitution and re-substitution, for him and in his name,
place and stead, in any and all capacities, to sign the Company's Annual Report
on Form 10-K for the Calendar Year 2000 ended December 31, 2000 and any and all
amendments thereto, and to file the same, with exhibits and schedules thereto,
and other documents therewith, with the Securities and Exchange Commission,
granting unto said attorneys-in-fact, full power and authority to do and perform
each and every act and thing necessary or desirable to be done in and about the
premises, as fully to all intents and purposes as he might or could do in
person, thereby ratifying and confirming all that said attorneys-in-fact, or his
substitute, may lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, I have hereunto set my hand this 17th day of April, 2001.



                             /s/ Richard A. Drexler
                             ----------------------
                               Richard A. Drexler
<PAGE>

                               POWER OF ATTORNEY
                               -----------------


The undersigned, as a director and/or an officer of ABC-NACO Inc. (the
"Company"), does hereby constitute and appoint Vaughn W. Makary and J. P.
Singsank, and each of them, as his true and lawful attorney-in-fact and agent,
with full power of substitution and re-substitution, for him and in his name,
place and stead, in any and all capacities, to sign the Company's Annual Report
on Form 10-K for the Calendar Year 2000 ended December 31, 2000 and any and all
amendments thereto, and to file the same, with exhibits and schedules thereto,
and other documents therewith, with the Securities and Exchange Commission,
granting unto said attorneys-in-fact, full power and authority to do and perform
each and every act and thing necessary or desirable to be done in and about the
premises, as fully to all intents and purposes as he might or could do in
person, thereby ratifying and confirming all that said attorneys-in-fact, or his
substitute, may lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, I have hereunto set my hand this 17th day of April, 2001.



                             /s/  Jean-Pierre Ergas
                             ----------------------
                                Jean-Pierre Ergas
<PAGE>

                               POWER OF ATTORNEY
                               -----------------


The undersigned, as a director and/or an officer of ABC-NACO Inc. (the
"Company"), does hereby constitute and appoint Vaughn W. Makary and J. P.
Singsank, and each of them, as his true and lawful attorney-in-fact and agent,
with full power of substitution and re-substitution, for him and in his name,
place and stead, in any and all capacities, to sign the Company's Annual Report
on Form 10-K for the Calendar Year 2000 ended December 31, 2000 and any and all
amendments thereto, and to file the same, with exhibits and schedules thereto,
and other documents therewith, with the Securities and Exchange Commission,
granting unto said attorneys-in-fact, full power and authority to do and perform
each and every act and thing necessary or desirable to be done in and about the
premises, as fully to all intents and purposes as he might or could do in
person, thereby ratifying and confirming all that said attorneys-in-fact, or his
substitute, may lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, I have hereunto set my hand this 17th day of April, 2001.



                             /s/ Donald W. Grinter
                             ---------------------
                               Donald W. Grinter
<PAGE>

                               POWER OF ATTORNEY
                               -----------------


The undersigned, as a director and/or an officer of ABC-NACO Inc. (the
"Company"), does hereby constitute and appoint Vaughn W. Makary and J. P.
Singsank, and each of them, as his true and lawful attorney-in-fact and agent,
with full power of substitution and re-substitution, for him and in his name,
place and stead, in any and all capacities, to sign the Company's Annual Report
on Form 10-K for the Calendar Year 2000 ended December 31, 2000 and any and all
amendments thereto, and to file the same, with exhibits and schedules thereto,
and other documents therewith, with the Securities and Exchange Commission,
granting unto said attorneys-in-fact, full power and authority to do and perform
each and every act and thing necessary or desirable to be done in and about the
premises, as fully to all intents and purposes as he might or could do in
person, thereby ratifying and confirming all that said attorneys-in-fact, or his
substitute, may lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, I have hereunto set my hand this 17th day of April, 2001.



                              /s/ James E. Martin
                              -------------------
                                James E. Martin
<PAGE>

                               POWER OF ATTORNEY
                               -----------------


The undersigned, as a director and/or an officer of ABC-NACO Inc. (the
"Company"), does hereby constitute and appoint Vaughn W. Makary and J. P.
Singsank, and each of them, as his true and lawful attorney-in-fact and agent,
with full power of substitution and re-substitution, for him and in his name,
place and stead, in any and all capacities, to sign the Company's Annual Report
on Form 10-K for the Calendar Year 2000 ended December 31, 2000 and any and all
amendments thereto, and to file the same, with exhibits and schedules thereto,
and other documents therewith, with the Securities and Exchange Commission,
granting unto said attorneys-in-fact, full power and authority to do and perform
each and every act and thing necessary or desirable to be done in and about the
premises, as fully to all intents and purposes as he might or could do in
person, thereby ratifying and confirming all that said attorneys-in-fact, or his
substitute, may lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, I have hereunto set my hand this 17th day of April, 2001.



                             /s/ George W. Peck IV
                             ---------------------
                               George W. Peck IV
<PAGE>

                               POWER OF ATTORNEY
                               -----------------


The undersigned, as a director and/or an officer of ABC-NACO Inc. (the
"Company"), does hereby constitute and appoint Vaughn W. Makary and J. P.
Singsank, and each of them, as his true and lawful attorney-in-fact and agent,
with full power of substitution and re-substitution, for him and in his name,
place and stead, in any and all capacities, to sign the Company's Annual Report
on Form 10-K for the Calendar Year 2000 ended December 31, 2000 and any and all
amendments thereto, and to file the same, with exhibits and schedules thereto,
and other documents therewith, with the Securities and Exchange Commission,
granting unto said attorneys-in-fact, full power and authority to do and perform
each and every act and thing necessary or desirable to be done in and about the
premises, as fully to all intents and purposes as he might or could do in
person, thereby ratifying and confirming all that said attorneys-in-fact, or his
substitute, may lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, I have hereunto set my hand this 17th day of April, 2001.



                            /s/ Willard H. Thompson
                            -----------------------
                              Willard H. Thompson
<PAGE>

                               POWER OF ATTORNEY
                               -----------------


The undersigned, as a director and/or an officer of ABC-NACO Inc. (the
"Company"), does hereby constitute and appoint Vaughn W. Makary and J. P.
Singsank, and each of them, as his true and lawful attorney-in-fact and agent,
with full power of substitution and re-substitution, for him and in his name,
place and stead, in any and all capacities, to sign the Company's Annual Report
on Form 10-K for the Calendar Year 2000 ended December 31, 2000 and any and all
amendments thereto, and to file the same, with exhibits and schedules thereto,
and other documents therewith, with the Securities and Exchange Commission,
granting unto said attorneys-in-fact, full power and authority to do and perform
each and every act and thing necessary or desirable to be done in and about the
premises, as fully to all intents and purposes as he might or could do in
person, thereby ratifying and confirming all that said attorneys-in-fact, or his
substitute, may lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, I have hereunto set my hand this 17th day of April, 2001.



                              /s/ Vaughn W. Makary
                              --------------------
                                Vaughn W. Makary