Those that require damp soil or drier sites are also often marked.

Legacy en route navigation aids required land-based sites where power was available and maintenance crews had access.

'Dismantling them will require special techniques not yet perfected, and new sites to store the radioactive wastes,' she warns.

Compared to the existing Pinetree radars, Lewis' system would require much smaller sites and less power.

Mainland China requires sites that share video files to have permits and be controlled by the state or owned by state.

The company then tried to have laws passed in several states that would require other sites to conduct background checks or disclose that they do not.

(3) Ito incorrectly explains why our model requires sites of learning in the vestibular inputs to both the cerebellum and the brain stem.

The variety is not particularly demanding in terms of soil though it does require warm sites with sufficient aeration as it is prone to rot.

Last year, it won passage of a law requiring sites on the World Wide Web to obtain parental permission before collecting personal information from children.

And it would not require special launching sites such as Cape Canaveral: The military could base the craft at conventional airfields.