About the riggers. They are the guy that handle lifting activity. They are working with something heavy. They prepare the rigging device such as sling,shackle, spread bar and all the things that need not only cautious, but brave. Everyday they facing this work environment. In our country, even in recognized company, their welfare sometimes is not equal with the task that they must done. So,be careful with this people, because anytime, without warning, they can blow out. Be sure you are not the one who ignite the gas.