Exploitation of tungsten and granite in the country have been proposed recently.
Aggregates
Traffic increased double digits in the first quarter of the year.
Companies in Menorca view with suspicion government's move to allow opening of new quarries in the area.
Government also in the process of identifying sites for quarry operations in the country.
City of Los Angeles probing operations near Bio Bio River.
UNEP says region will continue to dominate world material flows.
Cemex will find out the result of proposal by May 21.
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