ironfilings
Alargemagnetcollectsup theironfilings.
I wouldn'twalkbarefootthrough theworkshop, what with all themetalfilings andwoodsplinterson thefloor.
Makesureyou put all thenailfilings in thebin.
They used atechniqueofpassingwaterthroughironfilings.
Thebarrelscontainedironfilings onto which sulphuricacidhad beenpoured.