SUPPLEMENT TO THE PROSPECTUS
OF MORGAN STANLEY DEAN WITTER PRECIOUS METALS AND MINERALS TRUST
Dated February 22, 1999
On July 29, 1999, the Board of Trustees of Morgan Stanley
Dean Witter Precious Metals and Minerals Trust (the "Fund")
approved an Agreement and Plan of Reorganization by and between
the Fund and Morgan Stanley Dean Witter Natural Resource
Development Securities Inc. ("Natural Resource"), pursuant to
which substantially all of the assets of the Fund would be
combined with those of Natural Resource and shareholders of the
Fund would become shareholders of Natural Resource receiving
shares of Natural Resource equal to the value of their holdings
in the Fund (the "Reorganization"). Each shareholder of the Fund
will receive the Class of shares of Natural Resource that
corresponds to the Class of shares of the Fund currently held by
that shareholder. The Reorganization is subject to the approval
of shareholders of the Fund at a special meeting of shareholders
scheduled to be held on December 21, 1999. A proxy statement
formally detailing the proposal, the reasons for the Trustees'
action and information concerning Natural Resource will be
distributed to shareholders of the Fund.
July 29, 1999
