21.   Concerns have been raised by environmental and heritage groups that British Rail will seek permission to demolish bridges which cannot be sold.

22.   Some staff involved in setting up new schedules for BBC Scotland raise another concern.

23.   Concern has been raised about the costs of regulation.

24.   All this raised concern that they might have been accomplices of the hijackers, or perhaps part of another hijacking team.

25.   Although some have raised concerns about his age and his potential effectiveness, Wardak was clearly chosen for his experience and his tact.

26.   Also, cold weather entering the Midwest raised concern that newly sown winter wheat fields might not develop adequately before entering dormancy, traders said.

27.   Also boosting prices were reports that United Nations observers in Iraq might be missing, raising concerns about the political stability of the oil-rich region.

28.   Although employees had raised concerns on many occasions, the company, motivated by a desire to cut costs, had brushed off the complaints.

29.   Although fires have captured public attention, regulators also have raised environmental concerns with TRW.

30.   Although recent infections have raised concerns, the inherent dangers of globalization have lurked for centuries.