I’ll bite, out of curiosity since I don’t think you’d tell us a lie on purpose.
What about civil engineering needs that kind of cleanliness. It couldn’t be something about roadways or other civil engineering projects that I ever heard about, where nobody would care if grass, pollen, etc. got into it -= let alone glitter bits.
Glad you asked. My brother is a management-level engineer in charge of the building, repair and maintenance of labs at the Applied Physics Labs at Johns Hopkins.