The sand dunes were relentlessly mined in the past century; power lines and a gypsum plant split the park.
Fracking, in this regard, is no different from gypsum mining, or some kinds of industrial agriculture.
They are done on leather prepared with gypsum and nailed to the wooden ceiling.
To every hundred pounds of this powder, about three pounds of gypsum is added.
gypsum must be moist to be effective, and, hence, should be used regularly upon the fresh manure.
Production of gypsum in the United States comes from eighteen states.
It is to the formation of gypsum in the resulting product that the dryness of the superphosphate is due.
In some of these domes are also found petroleum, gypsum, and sulphur (p. 110).
These meadows are divided by chains formed of red clay, and huge masses of gypsum, with here and there a pyramid of gravel.
Beds of gypsum have been discovered on the head waters of the Pere Marquette.
substance (hydrated calcium sulphate) used in making plaster, late 14c., from Latin gypsum, from Greek gypsos "chalk," according to Klein, perhaps of Semitic origin (cf. Arabic jibs, Hebrew gephes "plaster").
A colorless, white, or pinkish mineral. Gypsum occurs as individual blade-shaped crystals or as massive beds in sedimentary rocks, especially those formed through the evaporation of saline-rich water. It is used in manufacturing plasterboard, cement, and fertilizers. Chemical formula: CaSO4·2H2O.