1
                                                                   Exhibit 23(b)


INDEPENDENT AUDITORS' CONSENT


We consent to the incorporation by reference in the registration statements of
MAPCO Inc. and Williams Holdings of Delaware, Inc. shown below of our report
dated January 27, 1998 (March 3, 1998, as to Notes 2 and 16 to the MAPCO Inc.
consolidated financial statements) with respect to the consolidated financial
statements of MAPCO Inc., which report includes explanatory paragraphs relating
to certain litigation to which MAPCO Inc. is a defendant and the change in its
method of accounting for business process reengineering activities to conform to
the consensus reached by the Emerging Issues Task Force in Issue No. 97-13,
appearing in this Current Report of Williams Holdings of Delaware, Inc. on Form
8-K.

MAPCO Inc. Registration Statements

Form S-3:      Registration No. 33-34044
               Registration No. 333-20837

Williams Holdings of Delaware, Inc. Registration Statements

Form S-3:      Registration No. 33-63495
               Registration No. 333-20927
               Registration No. 333-24683
               Registration No. 333-35097



Deloitte & Touche LLP
Tulsa, Oklahoma
May 18, 1998