Hillhead 2012
19 - 21 June 2012
International live demonstration show for the quarrying, recycling and heavy construction industries at Hillhead Quarry, Buxton, UK.
gypsum
Hydrated calcium sulphate, CaSO4.2H2O, associated with other evaporite minerals in extensive beds. Used in the manufacture of plaster-board, Portland cement, fertilizer etc.
The monthly journal for the quarry products industry.