This is critical material, and it may be my only chance to brief you.

So far, however, there has been no evidence that the labs were ever put into use in producing the critical materials for biological weapons.

The uncensored work included materials highly critical of the Soviet regime.

Uranium was suddenly the most critical material the United States had ever known.

We wouldn't want him to activate a program wiping out critical materials.

Normal property cards: The critical material in this game.

This was the worst case for resource availability, becoming a strategic and critical material.

Most became instantly dependent on imported spare parts and critical materials.

Strategic and critical materials necessary for the common defense.

The daily movement of these critical materials directly impacts an organization's ability to deliver optimal care.