 DIAMOND SHAMROCK &lt;DIA> RAISES CRUDE POSTINGS
  Diamond Shamrock said it raised the
  contract price it will pay for crude oil 50 cts a barrel,
  effective today.
      The increase brings the company's posted price for the
  benchmark grade, West Texas Intermediate, to 17.50 dlrs/bbl.
      Diamond Shamrock last changed its postings on March 4.
  

