`  == Text copied directly fromsources cited. ==  Some of the text in this article is copied verbatim from the sources it references. For example:  ``It is estimated that a total of no less than 84 million metric tons of mine tailings were discharged into this shallow bay between 1975 and 1988.``  And surrounding sentences are copied and pasted directly from the referenced source. I suspect there are other instances of this.   `