WILLIAMS COS &lt;WMB> COMPLETES SALE OF UNIT
  Williams Cos said it completed the
  sale of its Agrico Chemical Co unit to Freeport-McMoRan
  Resource Partners L.P. &lt;FRP> for an initial 250 mln dlrs cash.
      The company said it will also receive an additional 100 to
  250 mln dlrs in five years based on the operating performance
  of the unit.
      It said the cash proceeds will be used to lower its debt
  costs.
  

