Castles from Junk

Missed the Richmond train at West Hampstead due to a late connection. Got the Clapham train to Willesden instead so I can wait under cover. I'm glad I did. Just across the way is a massive pile of junk. There are three guys in lifters (look kinda like those grabber things at the amusement arcade). They seem to just be picking up junk from the ground at the edges and dumping it higher up towards the middle like making a sand castle out of old filing cabinets and bathtubs. Kinda fun to watch; almost hypnotic. On closer inspection they are more organised than I initially thought. The first guy is picking stuff up at ground level and dropping it about a third of the way up. A truck just came and replenished his ground level stores. The next guy picks up from the first guy's leavings and drops higher up for the last guy who drops on the top. Maybe I should get a few workmen with cranes rather than bee hives? ;)