Landslides not only cause the deaths of mineworkers. They are also triggered by mineral extraction itself. According to a study, published recently in Geology journal, landslides (excluding those caused by earthquakes) killed more than 32,000 people across the world between 2004 and 2010 – up to 10 times more than previously estimated. In fact, according to the authors of the study, it is likely the total number has now reached 40,000.
See http://www.minesandcommunities.org/article.php?a=11863.