EXHIBIT 99.1

                DAMES & MOORE GROUP ANNOUNCES INTENT TO PURCHASE
                              RADIAN INTERNATIONAL

  PROPOSED ACQUISITION IS EXPECTED TO RESULT IN SIGNIFICANT EFFICIENCIES AND 
              BE ACCRETIVE TO SHAREHOLDERS BEYOND THE CURRENT YEAR


     LOS ANGELES, June 24, 1998--Dames & Moore Group (NYSE:DM) announced today
that it will acquire Radian International LLC from its owner The Dow Chemical
Company for approximately $117 million. The acquisition price will be paid in
cash at closing, which, subject to regulatory approval, is anticipated to occur
in the next couple of months.  Radian is a leading multinational engineering,
consulting and construction firm with annualized revenues of approximately $300
million and over 2,000 employees in 36 U.S. and 12 international offices. Radian
will become a wholly owned subsidiary of Dames & Moore Group.

     Headquartered in Austin, Texas, Radian offers a broad range of technical
and consulting services to the private and public sectors.  Areas of expertise
include: process engineering, detailed design, construction management,
pollution monitoring, information management, and  remediation and related
construction services.  The company also provides services on an outsourced
basis to its clients in the areas of total chemical management, environmental,
and health and safety services. In addition, through its international
locations, Radian is strategically positioned to provide its multinational
clients with services on a global basis.

     Dames & Moore Group Chief Executive Officer Arthur C. Darrow said, "Radian
has earned an outstanding reputation for the quality and reliability of its
engineering and technical services as well as its technological innovation.  The
acquisition of Radian will greatly expand our process/chemical engineering
division and extend our client base in the chemical industry.  This acquisition
will raise Dames & Moore Group's annualized gross revenues to over $1 billion,
and create one of the largest engineering businesses in the world.  Many
synergies are expected to result from this acquisition, ranging from broader
business opportunities to significant administrative cost savings.  While the
acquisition probably will not significantly 


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DAMES & MOORE GROUP ANNOUNCES INTENT TO PURCHASE RADIAN INTERNATIONAL
JUNE 24, 1998
PAGE 2


affect earnings this year, it is expected to be highly accretive in the future
as we improve overall operating efficiency."

     Following the acquisition, Radian will continue to be managed by Dr. Donald
M. Carlton, who co-founded the company in 1969 and serves as its president. 

     "Dames & Moore and Radian appear to be the ideal marriage--both companies
are dedicated to quality, innovative approach, and client service.  We are very
excited by the opportunities this transaction will create," stated Dr. Carlton.

     Dames & Moore Group previously expanded its process and chemical
engineering activities in April 1995, when it acquired Walk Haydel.  "Radian and
Walk Haydel provide complementary services and both have well-established
excellent client relationships based on their quality and value creation. 
Radian's client list includes some of the world's largest chemical, petroleum
and manufacturing companies as well as major governmental clients, and will
enable us to extend our existing process engineering activities throughout the
United States and overseas," stated Darrow.

     The Dames & Moore Group, a global engineering and consulting firm, will now
have annualized revenues of approximately $1 billion.  The Group's capabilities
include environmental, earth science, behavioral science and life science
consulting as well as process engineering, and transportation and construction
services.  Based in Los Angeles, the Group will have over 230 offices spanning
29 countries.

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