I would not have guessed sand to be the most used natural resource 2nd only to water. Looking into it, it makes sense when you see that 75% of cement is sand. The other issue is that there is going to be a sand shortage simply because one cannot just take the sand from the deserts and use it as it is round in shape and to make cement you need ragged edge sand that only comes from river beds and sea beds. Something to ponder on your next visit to the beach.
$70 billion industry
Use 50 billion tonnes every year.
4 Billion tonnes of concrete every year.
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