180 icons were commissioned for a variety of use cases, so an outstanding geological/industrial company could have a set of their own to match their identity. These are just a few.

The main limitation was that the icons needed to work at 16x16 px. Yeah I know right! Still, I designed them on a grid and checked the pixelation as I went. They all come off pretty well. Here's to creative constraints.

Pictographic

The hand was haaaaard. But I've never liked drawing hands.....
Symbolic