Unit II Case Study Research the Mount Polley mine spill. Write a case study of at least three pages (not including title and reference pages) on this event. Your case study should address the following items:  Describe the incident and its environmental impact.  Summarize the physical and chemical characteristics of the waste.  The article mentions poor regulation and oversight, an industry-friendly attitude, and political contributions from the mining company as contributing factors in the spill. Which of these do you think could have contributed the most? Take a position and defend it, using at least one outside resource.  Discuss one factor that may have contributed to the accident that was not mentioned in the article. Your case study should include at least four credible sources,