Eventually, some 150 illegal mining and quarrying companies in the area were shut down.
The company designs and manufactures a range of equipment used in the recycling, materials handling and quarrying industries.
The Quinn Group cement and quarrying business is in talks to merge with part of the Belfast-based Lagan group.
China has sought to tighten access to explosives used for quarrying following a series of attacks by people using homemade bombs.
Solid waste combustion, sewage treatment, stone quarrying, marinas, and oil and coal-fired power plants have air pollution damages larger than their value added.
FORBES: Pollution Costs More Than What is Produced to Make the Pollution
Manufacturing, which is one of the components of the index of production along with mining and quarrying, gas and electricity, and water and sewerage, fell 0.3% compared with the previous month.
Although, by 1981, the proportion of Welsh employees working in mining and quarrying was just 3.8%, the coal industry still had a symbolic place at the heart of ideas of the Welsh nation.
The row over quarrying at the site began after permission for a small scale operation was granted by the then Stirling District Council in 1982, however there has been little activity at the site for the past 14 years.
BBC: Stirling Council suspends quarrying at Bannockburn site
It seemed to me to be a different world yet it was simply a dour hillside quarrying village producing stone for all kinds of industrial purposes - the finer, harder types for grindstones for the 'little mesters' of the Sheffield cutlery trade and for lining furnaces in the steelworks.
BBC: Memories of 1930s South Yorkshire: T' pint pots on t' cornish
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