CERTIFICATION OF KERRY A. SHIBA PURSUANT TO SECTION 302

Exhibit 31.2

CERTIFICATION PURSUANT TO SECTION 302
OF THE SARBANES-OXLEY ACT OF 2002

I, Kerry A. Shiba, certify that:

1. I have reviewed this report on Form 10-Q of Kaiser Aluminum
Corporation;

2. Based on my knowledge, this report does not contain any untrue
statement of a material fact or omit to state a material fact necessary to make
the statements made, in light of the circumstances under which such statements
were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial
information included in this report, fairly present in all material respects the
financial condition, results of operations and cash flows of the registrant as
of, and for, the periods presented in this report;

4. The registrant's other certifying officers and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-15(e) and 15d-15(e)) [text omitted in accordance with SEC
transition instructions set forth in SEC Release No. 34-47986] for the
registrant and we have:

a) designed such disclosure controls and procedures, or caused
such disclosure controls and procedures to be designed under
our supervision, to ensure that material information relating
to the registrant, including its consolidated subsidiaries, is
made known to us by others within those entities, particularly
during the period in which this report is being prepared;

b) [paragraph omitted in accordance with SEC transition
instructions set forth in SEC Release No. 34-47986]

c) evaluated the effectiveness of the registrant's disclosure
controls and procedures and presented in this report our
conclusions about the effectiveness of the disclosure controls
and procedures as of the end of the period covered by this
report based on such evaluation; and

d) disclosed in this report any changes in the registrant's
internal control over financial reporting that occurred during
the registrant's most recent fiscal quarter (the registrant's
fourth fiscal quarter in the case of an annual report) that
has materially affected, or is reasonably likely to materially
affect, the registrant's internal control over financial
reporting.

5. The registrant's other certifying officers and I have disclosed,
based on our most recent evaluation of internal control over financial
reporting, to the registrant's auditors and the audit committee of the
registrant's board of directors (or persons performing the equivalent function):

a) all significant deficiencies and material weaknesses in the
design or operation of internal control over financial
reporting which are reasonably likely to adversely affect the
registrant's ability to record, process, summarize and report
financial information; and

b) any fraud, whether or not material, that involves management
or other employees who have a significant role in the
registrant's internal control over financial reporting.

Date: August 13, 2004 /s/ Kerry A. Shiba
----------------------------------------
Kerry A. Shiba
Chief Financial Officer

A signed original of this written statement required by Section 302 has been
provided to Kaiser Aluminum Corporation and will be retained by Kaiser Aluminum
Corporation and furnished to the Securities and Exchange Commission or its staff
upon request.