Michael Glawogger, an Austrian documentary director, who died tragically in a car crash in 2014, made a 2005 documentary partly about Pashtun workers in Pakistan who dismantle ships. The part about the ship-breaking workers starts at about 1:21:10 and lasts about 25 minutes. It's really fascinating - I highly recommend it. The documentary is called "Workingman's Death". Actually, the whole documentary is really good: http://www.imdb.com/title/tt0478331/