1.   The mines have caused serious pollution of the river system.

2.   A century later, as many as a third of U.S. casualties in Vietnam were caused by mines, many of them U.S.-made.

3.   Mines usually cause crippling injuries complicated by a high rate of infections.

4.   The Canadian government is holding hearings across the Northwest Territories this month to determine whether the mine will cause unacceptable amounts of environmental damage to the pristine area.

5.   As they approached the flooded river Esquirin there was an explosion caused by mines displaced by the raging waters.

6.   The mine has caused extensive environmental damage to nearby river systems.

7.   The mines have caused military and civilian casualties, he said.

8.   The military said a rebel mine had caused the explosion.

9.   They later said a mine had caused it, Interfax reported.

10.   Unexploded mines also cause one of the greatest potential dangers to peacekeepers.