Troublesome work on sites

As you can imagine the work at the sites is different from Germany. Believe it or not, I have seen Indians destroying a complete house which had two floors by using nothing but their hands. First they removed the roof and afterwards they used a hammer to destroy the walls. Of course, it was very exhausting for the work men. Due to the fact that the site was in our neighbourhood, we suffered of the dust ;-). I also had the impression that they recycle the house in a certain extend coz they gathered steel and bricks of the house. Maybe some weeks later they have rebuilt the house somewhere else, who knows. All together it took much more than one week till the house was disappeared.
And when the worker men have to open a street they open it with a rod of steel. Hence the soil becomes looser so that they can dig afterwards. The soil then is removed by using a little plate which is lifted above the head. I am sure they have diggers, even though I haven’t seen any for instance. But instead of using them, they use their hands. It might be much cheaper because of the lower labour costs.
Sites, which leave a hole back on the road, are secured by putting some stones or tyres around the hole, that’s it, no lights warning you about the danger. By the way, it is not only the men working on sites. I have also seen quite lots of women. The workers earn at about 75 Rupees per day one of my colleagues told me. This applies to those who have no education. It is subject to the construction companies whether they use steely or wooden poles for scaffolds. I have seen quite a lot of scaffolds made out of wood. The poles are tied together with ropes. I was wondering how it works. But obviously, it works.