Limestone reserve another 100 years only
JAPAN Domestic Limestone Production (Mil ton)
DATA : Natural Resources Statistics
DATA : Agency for Natural Resources and Energy
There are only another 5,000 million tons of Limestone remaining, and it is going to short within 30 years and then we shall depend on importing from overseas. It shall be important and necessary things to develop new raw materials and utilise Returned concrete.
Shortage of fine soil
All over the world, the demand of good quality sand is increasing time by time, however there is no statistics at all.
There are articles.which shows us the current situation.
LINK1