C ontractor has just finished concreting of a major RCC slab (it was cast just three days back).

Another major RCC slab was planned in the next four days in its vicinity. Carpentry gang was working on this new slab formwork. This gang found some shortage of props of 4.1 m height.

One of the carpenters of this gang sent his helpers to bring these props. The helpers went and started removing the props from underneath the newly cast RCC slab, resulting in the collapse of the entire slab progressively and causing major injuries to the helpers.