'Iron' in the Bible

and it cometh to pass, the one is felling the beam, and the iron hath fallen into the water, and he crieth and saith, 'Alas! my lord, and it asked!'

And the man of God saith, 'Whither hath it fallen?' and he sheweth him the place, and he cutteth a stick, and casteth thither, and causeth the iron to swim,