Harland and Wolff built the Titanic along with White Star Lines. Turns out they know how to down a crane as well. Samson, a large gantry crane used to hoist large ship modules was travelling when no one was looking closely enough. It ran into the jib of a tower crane pushed it over. Fortunatly for us some painters caught it on a phone video camera. Be aware that when you witness a tower crane collapse, expletives will fly out of your mouth.