Cigarette manufacturers persisted relentlessly in claiming that their product hasn't ever been proved unsafe.

In Edenton, a small city with a harbor on the sound, that haven proved unsafe.

There was a chance it would prove unsafe for the creature on the floor, but he had to risk it.

When the oil runs, now that nuclear has been proven unsafe, there is nothing.

Mechanical parts that may cause the car to cease transmission or prove unsafe for the road are also noted and advised upon.

The patched-up structure proved unsafe, however, and had to be demolished in 1711.

If the new one proves unsafe, move to another.

However, the concert was cancelled when the venue was proven unsafe.

The company hopes that if one of the compounds proves unsafe in testing, it will be able to fall back on others.

The project proved too costly and perhaps unsafe in a hurricane.