The collapse of a roof in the Chilean gold mine has left 33 trapped miners awaiting rescue by a borehole that is expected to take months to complete. Here's a layout of the mining accident and some of the deepest man-made and natural mines and wells.
12 Books That Changed My Life // From The Happiness of Pursuit and The Art of Asking, to His Dark Materials, and The Ocean at the End of the Lane. Fiction and non-fiction of every kind, books have sha (Top Quotes Book)
Calculus Derivatives and Limits Reference Sheet - Includes Chain Rule, Product Rule, Quotient Rule, Definition of Derivatives, and even the Mean Value Theorem. Great resources for those in Calculus 1 or even AP Calculus AB.
About the Golden Ratio: The Golden Ratio can be illustrated within special dimensions of Sprials, Triangles and Rectangles where the ratio of the length of the short side to the long side is was noted by ancient Greek architects as the most visually