The team at periodicvideos has created a TED-Ed Lesson for every element of the periodic table. This one is about copper -- element number 29 on the periodic table. Discover it with a nice demonstration and some interesting stories from the professor.
The San José copper-gold mine in Chile became famous all over the world in 2010 because of the "Chilean mining accident". Thirty-three men were trapped 700 m (almost 2300 feet) underground for 69 days, until they were rescued.