1.   In the absence of domestic reprocessing facilities, waste is rapidly piling up in storage.

2.   And as the work goes on, the waste piles up at sites around the country.

3.   Since then, nuclear waste has piled up in holding tanks at reactors nationwide.

4.   They contend that while construction is being delayed, toxic waste is piling up in laboratories and hospitals in cities across the state, posing a serious health hazard.

5.   Highly radioactive waste is piling up at sites around the United States.