The appellant was responsible for the erection of thirty grain silos on the
terminal. Each silo was fitted with fumigation pipes, diffuser grids and channels
which were each employed for the purpose of dissipating fumigant throughout
each silo and to control the spread of insects. Each of the diffuser grids was
manufactured under a sub-contract. Each grid consisted of a side bar on either
side of flat, stainless steel. The side bars were designed to fit flush with the side
bars of the grids on either side, in that way, the weight of the grain was
transferred and spread from one side bar to the others in the screen. But a single
wire in the mesh used to form each grid protruded beyond the end of the side bar
on each grid by a distance of between one and two millimetres. Every grid in
every silo was affected by this defect. A gap developed, therefore, which was
sufficient to admit the infiltration of grain into the fumigation pipes which were
exposed beneath each diffuser screen, eventually the whole of the six hundred
millimetre fumigation pipe beneath each silo became full of grain as did the area
beneath each screen. The small parts feeding from the fumigation pipes to
diffuser screens also became blocked by grain. In consequence of the blocking of
the fumigation pipes, each silo could not be fumigated. The plaintiff/appellant
was required to remove the grain and repair the screens. The case was conducted
on a statement of agreed facts which I have endeavoured to summarise.