Some older weapons, due to be retired, lack the latest safety devices to prevent dispersal of plutonium in case of accident or fire.

Guar gum and clay are thickening agents to prevent dispersal of the retardant after it is dropped from the plane.

In addition, removal of riparian vegetation fragments the remaining riparian ecosystem, which can prevent or hinder dispersal of species between habitat patches.

For water systems, precautionary chlorination is carried out before cleaning, to prevent dispersal of bacteria into the environment.

To prevent accidental dispersal, people should be dissuaded from buying Oriental bittersweet as an ornament or from growing it in their own gardens.

Non-existent wings prevent a gerrid from being weighed down, but prevent dispersal.

They can be issued as worldwide injunctions, preventing worldwide dispersal.

The last line of defense is to make sure that a transportation system can be quickly shut down to prevent dispersal once a release has been identified.

Reducing or eliminating overhead irrigation can prevent dispersal of the nematode through water splashing, and keeping the foliage dry prevents the nematodes from moving on the outside of the plant.

A crucial measure in such control is isolation of patients with contagious respiratory diseases in specially engineered rooms, to prevent dispersal of the SARS virus or any other infectious agent elsewhere.