"There are black/gray/brown particles of an unknown substance dusting the interiors of our surgical trays," surgical technician Elizabeth Haynes told the Union-Tribune, "in addition to black ...

“There are black/gray/brown particles of an unknown substance dusting the interiors of our surgical trays, in addition to black greasy smears of a known, but not surgically-approved substance ...

Everyone who works in a hospital operating room knows what a surgical tray wrap is. It's the thick, waterproof stuff that keeps surgical instruments sterile, and once it's used, it's thrown away.