EXHIBIT 23.1(a)

                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

   As independent public accountants, we hereby consent to the use of our
report dated July 10, 1998, except with respect to the matter discussed in Note
13, as to which the date is January 26, 1999, on the financial statements of
the Occidental Contributed Business (and to all references to our Firm)
included in or made a part of this registration statement.

                                          Arthur Andersen LLP

Dallas, Texas

August 30, 1999