| 1 | Coke consists mainly of carbon. | |
| 2 | But then the coke at home wasn`t fine. | |
| 3 | The refuse left when coke or charcoal is made. | |
| 4 | Old fashioned furnaces for making coke cannot recover valuable by-products; | |
| 5 | At home I also fetched the coke from the cellar and never had any problems. |