Search and rescue4.
(1)
A specified authority shall make provision for the purpose of rescuing persons who may be trapped and protecting them from serious harm in the event of–
(a)
a landslide; or
(b)
the collapse of a building, tunnel or other structure,
in its area.
(2)
The function conferred by paragraph (1) shall not apply where it is reasonable for a specified authority to conclude that another person with search and rescue functions or specialist search and rescue capabilities can make satisfactory provision for the emergency in connection with which the function is conferred.