Hillhead 2012
19 - 21 June 2012
International live demonstration show for the quarrying, recycling and heavy construction industries at Hillhead Quarry, Buxton, UK.
Baum jig
A jig used for separating coal from shale in which a pulsating motion is given to the water by intermittent admission of compressed air to the wash-box.
The monthly journal for the quarry products industry.