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CENTURY ALUMINUM CO (CENX)
SC 13G/A filed 07/08/11 matches your Company With Filing Alert [ CENTURY ALUMINUM CO ]
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SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

(Amendment No:  2)

CENTURY ALUMINUM COMPANY
--------------------------------------------------------
(Name of Issuer)

Common Stock
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(Title of Class of Securities)

156431108
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(CUSIP Number)

June 30, 2011
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(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to
which this Schedule is filed:

[X] Rule 13d-1(b)
[ ] Rule 13d-1(c)
[ ] Rule 13d-1(d)


*The remainder of this cover page shall be filled out
for a reporting person's initial filing on this form with
respect to the subject class of securities, and for any
subsequent amendment containing information which
would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover
page shall not be deemed to be "filed" for the purpose
of Section 18 of the Securities Exchange Act of 1934
("Act") or otherwise subject to the liabilities of that
section of the Act but shall be subject to all other
provisions of the Act (however, see the Notes).

CUSIP No.   156431108

(1) Names of reporting persons. BlackRock, Inc.

(2) Check the appropriate box if a member of a group
(a) [  ]
(b) [X]

(3) SEC use only

(4) Citizenship or place of organization


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