JOINT FILING AGREEMENT

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                                                                  EXHIBIT D

                             JOINT FILING AGREEMENT


                  The undersigned hereby agree that Amendment No. 2 dated
January 3, 1997 to the statement on Schedule 13D with respect to the shares of
Common Stock of WMX Technologies, Inc. is and any further amendments to such
statement signed by each of the undersigned shall be, filed on behalf of each
of them pursuant to and in accordance with the provisions of Rule 13d-1(f)
under the Securities Exchange Act of 1934.


Dated as of:  January 1, 1997



                                  XXXXXX XXXXX



                                  By:/s/Xxxx X. Xxxxxx
                                        Xxxx X. Xxxxxx
                                        Attorney-in-Fact


                                  XXXXX FUND MANAGEMENT, LLC


                                  By:/s/ Xxxx X. Xxxxxx
                                  Name:  Xxxx X. Xxxxxx
                                          Managing Director


                                  QUANTUM INDUSTRIAL PARTNERS LDC


                                  By:/s/ Xxxx X. Xxxxxx
                                  Name:  Xxxx X. Xxxxxx
                                  Title: Attorney-in-Fact


                                  QIH MANAGEMENT INVESTOR, L.P.

                                  By: QIH Management, Inc., general
                                     partner


                                   By:/s/ Xxxx X. Xxxxxx
                                   Name:  Xxxx X. Xxxxxx
                                   Title: Vice President




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                                   QIH MANAGEMENT, INC.


                                   By:/s/ Xxxx X. Xxxxxx
                                   Name:  Xxxx X. Xxxxxx
                                   Title: Vice President


                                   XXXXXXX X. XXXXXXXXXXXXX


                                  By:/s/ Xxxx X. Xxxxxx
                                         Xxxx X. Xxxxxx
                                         Attorney-in-Fact



                                   DUQUESNE CAPITAL MANAGEMENT, L.L.C.


                                      /s/ Xxxxxxx X. Xxxx
                                   Name:  Xxxxxxx X. Xxxx
                                   Title: Vice President