Atlantic Richfield - Further re Tender Offer

RNS No 5753r
ATLANTIC RICHFELD CO
8th June 1998

ARCO Extends Tender Offer for Union Texas Petroleum Stock to June 12

      ARCO (NYSE: ARC) announced today that its tender offer for all
outstanding shares of Union Texas Petroleum Holdings, Inc.'s (NYSE: UTH) common
stock has been extended until 5p.m., Eastern Standard Time, on Friday, June 12,
1998, unless further extended in accordance with the terms of the tender offer.

      The tender offer was previously scheduled to expire at 12:00 midnight,
EST, on Friday, June 5, 1998. 

      The tender offer is conditioned, among other things, upon any waiting
tender offer or to the exercise by ARCO of full ownership and voting rights with
respect to the shares to be acquired having expired or been terminated. 

      The waiting period under the EC merger regulations will expire at 12:00
midnight, Brussels time, on thursday, June 18, 1998, unless extended or
shortened in accordance with the EC merger regulations. 

      ARCO does not expect that the EC waiting period condition will be
satisfied until after June 12, the extended expiration date for the tender
offer. Accordingly, ARCO expects that the tender offer expiration date will have
to be extendedd again until the EC waiting period conditin is either satisfied
or waived by ARCO. 

      The depositary for the offer, First Chicago Trust Company of
New York, has advised ARCO that approximately 83.62 million net shares of common
stock have been tendered as of 12:00 midnight, EST, on Friday, June 5, 1998.  As
of March 31, 1998, Union Texas had approximately 85.25 million shares
outstanding.

      For a menu of ARCO news releases or to retrieve a specific release, visit
our website at http://www.arco.com on the Internet.

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