DENR probes quarry links to recent flooding in Metro | BusinessMirrorSep 3, 2018 . . into the massive flood that submerged many areas in Metro Manila. . Quarrying for rocks, on the other hand, is for the production of gravel,.gravel quarrying in the philippines,gravel quarrying in the philippines,2012 Census of Philippine Business and Industry - Mining and .Jan 24, 2015 . Sand and gravel quarrying led among the 21 industry sub-classes of the sector with 77 establishments accounting for 24.3 percent of the total.
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