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According to the Quarry Products Association Northern Ireland (QPANI), part of the Mineral Products Association, its members produce more than 90 percent of aggregates extracted--sand and gravel and crushed rock as well as non-aggregate minerals such as agricultural and industrial lime including limestone, clay and shale for cement.
According to the Quarry Products Association Northern Ireland (QPANI), there are approximately 160 quarries and sand pits located there.
"QPANI currently represents approximately 95 percent of companies involved in the supply of quarry products locally," said John Shannon of Patrick Bradley Ltd, QPANI chairman.