31. Restriction on operation of spark-hazardous engines---Every person
 commits an offence against this Act who, without the consent in writing
 of a Fire Officer for the District, at, on, in, or alongside---
   (a) Any rural fire district, State area, forest area, or fire safety
         margin; or
   (b) Any area subject for the time being to a restricted or prohibited
         fire season, or to a warning under section 20 or an order under
         section 21 of this Act; or
   (c) Any specially protected property---

 operates any helicopter unless its exhaust is protected from contact
 with vegetation, or operates any locomotive engine, motor vehicle,
 tractor, traction engine, portable engine, or stationary engine, or any
 other steam or internal combustion engine whatsoever, whether on a
 public road or otherwise, which is not, to the approval of a Fire
 Officer, provided with safe and efficient means for preventing the
 escape of dangerous sparks or flame from funnel or exhaust and for
 preventing the escape of live coals or fire from ashpan or firebox or
 the escape of petrol or other flammable substance (including fumes) from
 any appliance or container:

   Provided that nothing in this section shall have any application to
 milking machine plants, shearing plants, or irrigation or other water
 pumping plants, or farm vehicles, appliances, or engines, used in the
 ordinary course of farming operations in the vicinity of farm buildings
 or yards.
     Cf. 1955, No. 44, s. 28