LAFARGE NORTH AMERICA INC

Q: Mar 31 2006

FY: Dec 31 2005

FY: Dec 31 2005

Q: Sep 30 2005

Q: Jun 30 2005

Q: Mar 31 2005

FY: Dec 31 2004

Q: Sep 30 2004

Q: Jun 30 2004

Q: Mar 31 2004

FY: Mar 15 2004

Q: Sep 30 2003

Q: Jun 30 2003

Q: Mar 31 2003

FY: Mar 27 2003

Q: Sep 30 2002

Q: Jun 30 2002

Q: Mar 31 2002

FY: Mar 28 2002

Q: Sep 30 2001

8.01

Departure of Directors or Principal Officers; Election of Directors; Appointment of Principal Officers

Departure of Directors or Principal Officers; Election of Directors; Appointment of Principal Officers

2.02,9.01

5.03,9.01

1.01,9.01

Entry into a Material Definitive Agreement

8.01,9.01

2.02,9.01

2.02,9.01

5.02

1.01,9.01

1.01,9.01

5.02

2.02,9.01

8.01,9.01

Results of Operations and Financial Condition

2.02,9.01

2.02,9.01

12,7

Notification of removal from listing and/or registration on a national securities exchange

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post-effective amendment to a registration statement

Post-effective amendment to a registration statement

Certification of termination of registration of a class of securities (Section 12(g))

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Post Effective Amendment to S-8

Certification of termination of registration of a class of securities (Section 12(g))

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

TAYLOR GERALD H

Kilmer Van Nostrand Co. LTD

TANENBAUM LAWRENCE M

COHEN MARSHALL A

ROSE MICHEL

NADEAU BERTIN F

MURDOCH ROBERT W

MICALI JAMES M

MCGARVIE BLYTHE J

MALONE CLAUDINE B/CA

LAFONT BRUNO

COLLOMB BERTRAND P

Keeley Peter L

Bachmann James W

OLSEN ERIC C

NEALIS JAMES J III

LECHENE JEANMARC

LAFARGE NORTH AMERICA INC

FARRELL THOMAS

TANENBAUM LAWRENCE M

Letter from the SEC

Letter from the SEC

Correspondence with the SEC

Correspondence with the SEC

No description available

No description available

No description available

No description available

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)