Chinese Peru copper mining for 1/20 of the profit

Only the British could present so stiff-upper-lip a report.  See this link for a perfect example of the difference in the way the British report the news and the way the United States of Canada presents the news.  In addition to being a fascinating cultural icon, the report is also a BIG mining story—although I cannot help but feel that there is something not quite right in the story.  Something does not add up.  Can you help find the missing pieces?