UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                                 Washington, D.C.  20549

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                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 1 )*
                                    --------


                          Altair Nanotechnologies Inc.
--------------------------------------------------------------------------------
                                (Name of Issuer)

                                  Common Stock
--------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                   021373105
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                                 (CUSIP Number)

                                 March 31, 2004
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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:

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

                                  Page 1 of 4


                                  SCHEDULE 13G
CUSIP NO. 021373105
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1    NAMES OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (Entities Only)

     William P. Long
-----------------------------------------------------------------------------
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP     N/A
     (a) [ ]
     (b) [ ]
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3    SEC USE ONLY

-----------------------------------------------------------------------------
4    CITIZENSHIP OR PLACE OF ORGANIZATION

     U. S. Citizen
-----------------------------------------------------------------------------
NUMBER OF      5    SOLE VOTING POWER

SHARES              N/A
               --------------------------------------------------------------
BENEFICIALLY   6    SHARED VOTING POWER

OWNED BY            N/A
               --------------------------------------------------------------
EACH           7    SOLE DISPOSITIVE POWER

REPORTING           N/A
               --------------------------------------------------------------
PERSON         8    SHARED DISPOSITIVE POWER

WITH                N/A
-----------------------------------------------------------------------------
9    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     N/A
-----------------------------------------------------------------------------
10   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
     (See instructions)
                                                                         N/A
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11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)         Less than 5%(1)
-----------------------------------------------------------------------------
12   TYPE OF REPORTING PERSON

     IN
-----------------------------------------------------------------------------

-----------------------
(1) The reporting  person has ceased to be the beneficial  owner of more than 5%
of the class of  securities  due to an  increase  in the  number  of  securities
outstanding; the reporting person has not sold securities for five years, except
that as noted  on Form 4, he has  transferred  securities  to his  children  and
certain charitable groups in that time frame.

                                  Page 2 of 4

Item 1.

      (a) Name of Issuer:

      Altair Nanotechnologies, Inc.

      (b) Address of Issuer's Principal Executive Offices:

      204 Edison Way, Reno, Nevada 89502

Item 2.

      (a) Name of Person Filing:

      William P. Long

      (b) Address of Principal Business Office or, if none, Residence:

      1725 Sheridan Avenue, Suite 140, Cody, Wyoming 82414

      (c) Citizenship:

      U.S. Citizen

      (d) Title of Class of Securities:

      Common Stock

      (e) CUSIP Number:

      021373105

Item 3.

      N/A

Item 4.  Ownership.

    Provide  the  following  information  regarding  the  aggregate  number  and
percentage of the class of securities of the issuer identified in Item 1.

      (a) Amount beneficially owned: N/A.
      (b) Percent of class: Less than 5%(2)
      (c) Number of shares as to which the person has:
           (i) Sole power to vote or to direct the vote: N/A.
           (ii) Shared power to vote or to direct the vote: N/A
           (iii) Sole power to dispose or to direct the disposition of : N/A
           (iv) Shared power to dispose or to direct the disposition of: N/A

Item 5.  Ownership of Five Percent or Less of a Class.

    If this  statement  is being  filed to  report  the fact that as of the date
hereof the reporting  person has ceased to be the beneficial  owner of more than
five percent of the class of securities, check the following             [X]

    William P. Long has ceased to be the beneficial owner of more than 5% of the
outstanding Common Stock of the Issuer.(2)
---------------------
(2) The reporting  person has ceased to be the beneficial  owner of more than 5%
of the class of  securities  due to an  increase  in the  number  of  securities
outstanding; the reporting person has not sold securities for five years, except
that as noted  on Form 4, he has  transferred  securities  to his  children  and
certain charitable groups in that time frame.

                                  Page 3 of 4


Item 6.  Ownership of More than Five Percent on Behalf of Another Person.

    N/A

Item     7.  Identification  and Classification of the Subsidiary Which Acquired
         the Security Being Reported on By the Parent Holding Company or Control
         Person.

    N/A

Item 8.  Identification and Classification of Members of the Group.

    N/A

Item 9.  Notice of Dissolution of Group.

    N/A

Item 10.  Certification.

    By signing below I certify that, to the best of my knowledge and belief, the
    securities  referred  to above  were not  acquired  and are not held for the
    purpose of or with the effect of changing or influencing  the control of the
    issuer  of the  securities  and  were  not  acquired  and  are  not  held in
    connection with or as a participant in any  transaction  having that purpose
    or effect.

                                    SIGNATURE

    After  reasonable  inquiry and to the best of my  knowledge  and  belief,  I
certify that the information  set forth in this statement is true,  complete and
correct.

                                               June 1, 2004
                                 -----------------------------------------------
                                                   Date

                                 /s/ William P. Long
                                 -----------------------------------------------
                                                 Signature

                                 William P. Long
                                 -----------------------------------------------
                                                Name/Title

                                  Page 4 of 4