Soil H2o potential checking: a gypsum block may be inserted into the soil, and its electrical resistance can be calculated to derive soil humidity.[48] Surface mining involves eradicating overburden to show the gypsum layer, and that is then drilled, blasted, and transported for processing. Underground mining will involve generating tunnels https://www.propanraya.com/id/produk/eco-gypsum-ee-4050