Open This page from an air raid precaution book had instruction for building an Anderson Shelter.
Unfortunately " covering ones backside " is a necessary precaution in these days of litigation.
As a precaution I was kept in over night as I developed surgical emphysema, from the aspiration site.
This precaution is necessary because wheatgerm contains lectin, which can potentially cause red blood cells to clump.
Security Residents in College should take every precaution against theft from their rooms.
The council takes every reasonable precaution to secure its open land.