Although in most countries of the world there are underground stone mines, but in Iran all gypsum mines are mined superficially and by open mining methods.
Gypsum , like most other consumable stone , is mined by blasting and blasting.
Also , if the storage is in the form of a hill or a mountain and the gyosum layers are continuous along the horizon , gypsum extraction is possible by continuous extraction machines .
Gypsum reserves exist in all continents of the world . There are large deposits of gypsum in the Americas , Asia and Australia .
Also in Euroe , gypsum mines are mined superficially.