Miles City Sand & Gravel Chora
The Choral Sorting Machine
One of my first jobs when I worked at the plant was to clean the grids of the screens used to grade the gravel into sizes. Eventually the screens plugged up with stones and I had to knock them loose with a hammer. The pea-gravel screen could be cleaned by running the tip of a large screwdiriver along the meshed grids, which produced an almost musical sound. This was the actual "gravel plant." The washer with its three grades of screen, one on top of the other, was fed by a conveyor belt carrying the pit gravel from the quarry, and fed in turn three piles of sized rock, with the sand coming out the bottom. The whole contraption made a terrible noise and shook violently. I realized years later, reading Plato's Timaeus after Derrida, that this gravel washer was a good metaphor for the operation of chora, sorting chaos into Earth, Air, Fire, Water.