Stalks, Chalks or Squawks?

On the MonoMonday challenge subject of urban decay, am I showing: 

(a) the ancient quality control failed section for Dalek eyestalk production?
(b) an old set of pre-suit making wool carders in a threads production line?
Or
(c) a long abandoned industrial bagpipe salvage stack?

(Thanks to the challenge-setters for indulging my idiocy)