I made dusty floor material and particle. The material heavily depends on jakaboxjumping's Moss/Dirt Grower Material -Cycles. I turn the moss color to black white for dust on floor.
The dust particle contains big dust, tiny sand, and hair.
The crane material came from victorbied's work bench.
Other images and description are Blender: Dust material and particle.
Thanks a lot ! I used it on this project with some few tweaks : https://www.artstation.com/artwork/aD99X The effect is subtle, but your presets were very helpful.
Now that's something that can make a scene even more realistic! Thank you for sharing!
Very effective