1.   The Tibetan Plateau has been an unstable area since at least the Late Palaeozoic.

2.   At least two of the four had worked in unstable areas before, one in East Timor and one in Somalia.

3.   A surge of pre-election violence was widely predicted, but it did not materialize except for clashes in some already unstable areas.

4.   Chief Thomas McCarthy told the interviewers that some firefighters were so determined to find people that they took dangerous chances scrambling about in unstable areas of the debris pile.

5.   Now scientists are building catheters capable of heat detection to pinpoint these unstable areas of plaque before they break off.

6.   Other export routes are much more expensive or involve unstable areas, such as Chechnya or Georgia.

7.   Some American television news crews have begun to pull out of unstable areas.

8.   Aggravating their plight, many Muslim refugees straggling into government territory are being sent against their will to resettle unstable front-line areas, U.N. and Red Cross workers said.

9.   Bataineh said the lack of movement in the peace talks between Israel and the Palestinians has also scared away business people afraid to invest in an unstable area.

10.   Building houses without permission in unstable geological areas and mountainsides stripped of vegetation by fires or illegal building, and lack of warning were also factors.