These unassuming girls can be seen shuffle dancing
But they have a side job doing building demolitions
Instead of explosive charges these enterprising girls run through the building at superspeed, smashing the important structural points that allow the building to collapse in a controlled manner.
For a small additional fee they can inhale all the usual hazardous dust, and spit it out in an appropriate disposal container. They are also practicing the ability to turn waste into glass beads for recycling.
They are also great at grinding road surfaces to prepare for repaving; Put these hard working supergirls to work on your next project. You'll love the results... or else