Amazing

Yesterday I was watching Massive Engines with Chris xxxxxx on Discovery, and the topic was pumps. The kind of things that were done using steam engines in late 19th century England is really amazing. Whether it was pumping out water from 300 feet deep mines at a rate of 200 buckets a minute or fighting fire, steam engine was the answer. In my view the most extraordinary achievement was using two huge steam engines in London's Tower Bridge to make it a movable bridge. Each steam engine lifts a 'bascule' weighing over 1000 tons!!!Its definetly an engineering marvel.