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Aggregates are obtained from two primary sources, namely quarries and river beds, and consist mainly of granite and limestone rock types. Aggregates are abundant throughout the states of Perak, Selangor, Johore, Sabah and Sarawak. Some 300 quarries were in operation during the year producing various types of aggregates. Production in 2007 declined to 77,633,789 tonnes from 79,912,682 tonnes produced in the previous year.
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