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In this February 23, 2016 file photo smoke from a fire at the Beetham landfill hovers over Port of Spain. At the Beetham, and environs, pollution sources could include bush fires. PHOTO BY SUREASH CHOLAI

In this February 23, 2016 file photo smoke from a fire at the Beetham landfill hovers over Port of Spain. At the Beetham, and environs, pollution sources could include bush fires. PHOTO BY SUREASH CHOLAI