Hillhead 2012
19 - 21 June 2012
International live demonstration show for the quarrying, recycling and heavy construction industries at Hillhead Quarry, Buxton, UK.
equivalent continuous sound level
The constant sound intensity level which in the course of continuous exposure for 8h would result in the same energy dosage as that due to the actual exposure.
abbr. Leq
The monthly journal for the quarry products industry.