1.   He said if the smaller dams break, they usually drain only onto vacant land or forests.

2.   A dam break in Bern canton cut service on a commuter train line.

3.   Authorities were too fearful of dam breaks and contaminated water to allow an earlier return.

4.   If the dam breaks, villagers would have about two hours to get out.

5.   If the dam breaks, villagers have about two hours to get out.