11.   State and local police and fire investigators were working to determine whether there was anything that sent Kelly Silk into a rage.

12.   Over the past three years, Mitsubishi and CNPC have been working to determine whether the project was physically possible.

13.   Authorities were working to determine what the powder was, but there was no immediate indication that it might have been anthrax, the Austria Press Agency reported.

14.   Investigators are working to determine the cause of death.

15.   Investigators were working to determine the cause of the blast, he said.

16.   Investigators are working to determine the cause of the blast, he said.

17.   Investigators were working to determine why Morales was at the controls.

18.   It said officials were working to determine how much oil had spilled.

19.   Kopke said investigators were working to determine why both trains were merged onto the same tracks near the Erfurt station.

20.   Matsushita said the central bank will work to determine the impact from that quake on the economy.