TWS Calgary just manufactured and installed these huge hoppers for a local company.

A hopper is a large, pyramidal or cone shaped container used in industrial processes to hold particulate matter or flow-able material of any sort, like dust, gravel, nuts, seeds etc. and can then dispense these from the bottom when needed.

After constructing these steel hoppers had to be installed and secured on site with a structural frame work anchored to heavy metal footings.
.