Simply think that all the processes will be stopped which are related to industrial business.the metals play very important role in our life nowadays and our life cannot be imagined without metals.
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We have to live with wooden furniture, wooden appliances, wooden train, wooden bus, and so on..  It will be tough...
Metals are tough and we prepared alloys and used them at home and in industries.  We will require plastic or glass containers in place of metals.  It will be difficult.
We cannot have bells in churches, temples...
We will not able to build strong bridges as they use reinforced concrete... there are steel trusses in the flooring, ceiling, walls..for strength.
  Iron man will not exist ..
for cooking we need some other containers.

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