Thank you beautiful and wonderful video.How is it checked by bringing the big stone to the factory whether it is marble or if there is fire in it, any technology machine is used or any other system to check.I think these people are great hard working people . I just wish I could work that hard.The closest thing I see to safety equipment is the knee-high boots. However one snap of a cable can easily cut a worker in half. One soul is worth all the riches in the whole world.