They had been all day working on this map, using charcoal and props.

Up to 1709, furnaces could only use charcoal to produce iron.

The iron was heated up to 1500 C using charcoal.

Cook as described above, adding fresh coals every hour if using charcoal.

Using wood or charcoal makes smoke and changes the flavor of the food.

"Coal would be best, but you could use wood or charcoal."

The students were to start by using charcoal to make marble-like patterns on paper.

Build a small fire in one side of a covered cooker, using enough charcoal to fill a shoe box.

The painters do not use pencil or charcoal for the preliminary drawings.

Lower fire (if using wood chips and charcoal, move them to each side).