In a field like construction, it can be pretty staggering entering it anew to find a vast array of lingering threats. Because people who have entered into the industry at an early age have largely become habituated to its dangers, and people who otherwise never have to enter it don't usually find cause to witness or perceive these dangers, except through statistics or brief newsreels of workplace disaster.
There are so many ways to be catastrophically injured, whether through being crushed, falling, putting high velocity and sharp objects through one's skin or body, poisoned, burned, exposed to carcinogen, or anything else. I've mentioned before that this is all because what we build tends to be very heavy, and needs to be highly continuous and insulated from the external world, so everything that manipulates that built environment itself, such as tools and vehicles, need to be heavy and able to manipulate objects at high velocity, high heat, high pressure, and etc, so as to bring that reality about.
So when objects of the built environment themselves are not a danger, the vehicles and the smallest hand tools are. Add to this the necessity for speed and volume in construction heightens the risk of accident. There are so many environmental and procedural threats involved, and such a high volume of labor, that one has to assume that there will be regular accidents, and there are. The built environment as it exists requires a steady sacrifice of limb, organ, sense, and even life.
