Hillhead 2012
19 - 21 June 2012
International live demonstration show for the quarrying, recycling and heavy construction industries at Hillhead Quarry, Buxton, UK.
feldspar
A family of rock-forming minerals consisting of aluminous silicates of barium, calcium, potassium and sodium. They occur as constituents of igneous rocks.
The monthly journal for the quarry products industry.