I worked on Land Rigs for 35+years and have seen all of this.Unless you have a Inbuilt survival system an Respect and Understand whats going on around you,Above you and underneath you and Act appriately your Chances of $Spending your paycheck are Slim Pickens.There are Very Harsh Realities on Oil-Rigs with Horrible unforgiveing consequences.You can train up a Good Guydoes'nt matter what colour creed or race etc but you can't teach or influence a Morons that know everything.Back in the 1970s an old retire Toolpusher would interview and scrutinize the new recruits and think and judge if they were suitable.Now companies have girls in miniskirts with HSE credentials who would rather hire a Justin Bieber lookalike.Whatever caused that incident I don't know but everything is done correctly they rarely happen.Something was done Wrong for that to happen.After the crew racked back the stand of pipe did the driller engage the clutch and keep going to the crown?I'd like to know.After retireing for 7 years and looking back it was a Great Career and Working Life! I now look @ my fingers and feet and toes etc and still have everything.I use to tell my crews "You Can't Rewind The Video!" If I do get another Next Life I would Never do it again thats for sure.Way Too Many Close Calls.Thanks for shareing.