Iron: Made Into: Implements for Husbandry
Source: TTT
1 Samuel 13:20, 21
Instead, all the Israelites would go down to the Philistines to sharpen their plowshares, mattocks, axes, and sickles. / The charge was a pim for sharpening a plowshare or mattock, a third of a shekel for sharpening a pitchfork or an axe, and a third of a shekel for repointing an oxgoad.
2 Samuel 12:31
David brought out the people who were there and put them to work with saws, iron picks, and axes, and he made them work at the brick kilns. He did the same to all the Ammonite cities. Then David and all his troops returned to Jerusalem.