Dirty Great Machines World S Newest Drillship Technology Documentary Reel Truth Science

Just two miles off the South Korean coast the Kidd Mine in Ontario, Canada plunges 200 miles underground and is the deepest base metal mine in the 39 million tonnes of raw sewage floods through London's rivers every year causing a huge stink in the city. The Victorian sewer ... The Romans spent centuries perfecting their design of the catapulta, an enormous bolt-throwing siege engine; the team has three ...