Philippines Black Sand Mining Operations, Gonzaga, Cagayan ...
Nov 19, 2011· BLACK SAND MINING IN GONZAGA, CAGAYAN PROVINCE In Gonzaga, despite a report by DENR itself dated April 29, 2011, that 2 black sand mining permittees are in violation of the law, as known to the complainants residing in the immediate vicinity of the operations, no CDO or stoppage orders have been served.