Triple hopper
Distributing ready made concrete mix

 
Three hoppers on a factory ground for distributing ready made concrete mix. This assembly is probably for supplying one type of mix in powder form to trucks that are positioned below. In another part of the factory a fluid mix is made which is transported just in time to building sites 1].

 
 
 
 
1] See Mixer (Photos 2015-1). This is a reedited and colorized version of one of the photos there.

Artificial coloring by Billy Axeman.