| Answer | Crossword Clue |
|---|---|
| IRONAND | "Build it up with ... steel . . . " |
| PUT | Build, with "up" |
| TONE | Build muscles, with "up" |
| TONE | Build one's muscles, with "up" |
| cementation | A process of altering a metal by heating it in contact with a powdered solid, esp. a former method of making steel by heating iron in contact with charcoal |
| vanadium | rare element occurring in certain minerals and obtained as a light-gray powder with a silvery luster or as a ductile metal: used as an ingredient of steel to toughen it and increase its shock resistance. Symbol: V; at. wt.: 50.942; at. no |
