Gypsum can be found in hydrothermal veins, which are fractures in rocks crammed with mineral-prosperous fluids that originate from deep inside the Earth's crust. A very important Observe just before adding gypsum to the soil will be to constantly know your soil standing. Always do soil testing.  The Occupational Security https://www.propanraya.com/id/produk/eco-gypsum-ee-4050