FORM 6-K

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16

of the Securities Exchange Act of 1934

For the month of: July, 2005

Commission File Number : 001-15218

LAFARGE

(Translation of registrant’s name into English)

61, rue des Belles Feuilles

75116 Paris

France

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F X Form 40-F

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):

Indicate by check mark whether by furnishing the information contained in this Form, the registrant is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes No X

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82-

Enclosures:

Press Release, dated July 4th, 2005, relating to: Blue Circle North America Management Agreement

Page 1 of 3 Total Pages

LOGO

PRESS RELEASE


Euronext: LG, NYSE: LR		Paris, July 4th, 2005

BLUE CIRCLE NORTH AMERICA MANAGEMENT AGREEMENT

Lafarge announces the signature of a new management agreement between Lafarge and Lafarge North America Inc., under which the assets of Blue Circle North America will continue to be managed by Lafarge North America.

The Agreement is effective as of January 1^st, 2006 subject to approval by the Lafarge Board of Directors.

Lafarge, the world leader in building materials, holds top-ranking positions in all four of its Divisions: Cement, Aggregates & Concrete, Roofing and Gypsum. Lafarge employs 77,000 people in 75 countries and posted sales of €14.4 billion in 2004. Additional information is available on the web site at www.lafarge.com.


COMMUNICATIONS:		INVESTOR RELATIONS:

Stéphanie Tessier: 33-1 44-34-92-32 stephanie.tessier@lafarge.com		James Palmer: 33-1 44-34-92-93 james.palmer@lafarge.com

Amanda Jones: 33-1 44-34-19-47 amanda.jones@lafarge.com		Danièle Daouphars: 33-1 44-34-92-93 daniele.daouphars@lafarge.com

Statements made in this press release that are not historical facts are forward-looking statements made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These statements are not guarantees of future performance and involve risks, uncertainties and assumptions (“Factors”), which are difficult to predict. Some of the Factors that could cause actual results to differ materially from those expressed in the forward-looking statements include, but are not limited to: the cyclical nature of the Company’s business; national and regional economic conditions in the countries in which the Group does business; currency fluctuations; seasonal nature of the Company’s operations; levels of construction spending in major markets; supply/demand structure of the industry; competition from new or existing competitors; unfavorable weather conditions during peak construction periods; changes in and implementation of environmental and other governmental regulations; our ability to successfully identify, complete and efficiently integrate acquisitions; our ability to successfully penetrate new markets; and other Factors disclosed in the Company’s public filings with the French Autorité des Marchés Financiers and the US Securities and Exchange Commission including its Reference Document and annual report on Form 20-F. In general, the Company is subject to the risks and uncertainties of the construction industry and of doing business throughout the world. The forward-looking statements are made as of this date and the Company undertakes no obligation to update them, whether as a result of new information, future events or otherwise.

Page 2 of 3 Total Pages

Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.


Date July 5th, 2005	Lafarge
	(Registrant)

	By:	/s/ Jean-Pierre Cloiseau
	Name:	Jean-Pierre Cloiseau
	Title:	Senior Vice President, Finance

Page 3 of 3 Total Pages

LAFARGE 6-K