Hillhead 2012
19 - 21 June 2012
International live demonstration show for the quarrying, recycling and heavy construction industries at Hillhead Quarry, Buxton, UK.
phyllite
A dark-grey or greenish metamorphic rock, coarser-grained and less perfectly cleaved than slate, but smaller grained and better cleaved than schist.
The monthly journal for the quarry products industry.