First Id like to give credit to AdvantageElectric1 This was uploaded on Jun 10, 2011 In his own words: "We (www.advantageelectricians.com) were wiring up a continuous motion pool/hot-tub in Shoreview MN the home owner was over seeing all the work himself had the hole dug rented the crane operator etc.. We were onsite waiting for the pool to be set so we could bond the frame and what not, when things took a wrong turn.... I was filming with my phone and I heard the crane operator scream and I took off running toward the front of the house as soon as he started to yell I knew something went wrong. It sounded like thunder when the thing hit the house knocked out the chimney crushed the garage and busted up the house good. The operator was shaking in his boots scared the hell out of him not to mention things like this do not happen they have a load chart that prevents things like that.. needless to say he was on the phone with the owner of the company right away. Crazy Friday...." My take. Plain and simple. He over loaded the crane. One would think as a crane operator you might have a little more common sense. Personally, I would have done a dry run. I would have had my boom configured for the lift. Booming down then scoping out is a mistake that a person that doesn't know how to operate a crane makes. I haven't seen the report on what happened. but if you are gonna blame it on the computer... that's laughable. You have a load chart behind your seat....... try using it sometime. Crane Info: Grove ATS 870 (70 TON) Maximum boom length: 138 ft