| CLOCK | ELAPSED | EVENT | AIR | CHARCOAL | ORE | ||||||
| UNIT | COUNT | TOTAL | UNIT | COUNT | TOTAL | ||||||
| gage | LpM | P | bucket | kg | scoop | kg | kg | ||||
| 0.28 | |||||||||||
| 12:00 | start bark pieces pre-heat | 3 | 300 | ||||||||
| 12:50 | :50 | fill with rough charcoal | 8 | 800 | 3 | 3 | |||||
| 13:15 | :25 | reaction column hot | |||||||||
| 13:20 | (1:20) | pre-heat complete | 3 | 6 | 10.80 | ||||||
| 12:00 | main sequence start | ||||||||||
| 12:10 | :10 | graded charcoal | 1 | 7 | |||||||
| 12:23 | :13 | 1 | 8 | ||||||||
| 12:34 | :11 | 1 | 9 | ||||||||
| 12:45 | :11 | finish 8.5 kg / increase air | 9 | 900 | 1 | 10 | 8.50 | ||||
| 12:51 | first ore addition | at 3/4 | |||||||||
| 13:00 | :15 | 1 | 11 | 1 | 1 | ||||||
| 13:11 | :11 | 1 | 12 | 1 | 2 | ||||||
| 13:22 | 0:11 | 1 | 13 | 1 | 3 | ||||||
| 13:34 | 0:12 | 1 | 14 | 1 | 4 | ||||||
| 13:45 | 0:11 | finish 8.75 kg | 1 | 15 | 17.25 | 1 | 5 | ||||
| 13:58 | 0:13 | 1 | 16 | 1 | 6 | ||||||
| increase ore amount | at 1.25 | ||||||||||
| 14:10 | :12 | 1 | 17 | 1.5 | 7.5 | ||||||
| 14:22 | 0:12 | finish 6.75 | 1 | 18 | 24.00 | 1.5 | 9 | ||||
| 14:34 | 0:12 | 1 | 19 | 1.5 | 10.5 | ||||||
| 14:42 | 0:08 | 1 | 20 | 1.5 | 12 | ||||||
| increase ore amount | at 2 | ||||||||||
| 14:51 | :09 | 1 | 21 | 2 | 14 | ||||||
| 14:58 | 0:07 | 1 | 22 | 2 | 16 | ||||||
| 15:07 | 0:09 | finish 9 kg | 1 | 23 | 33.00 | 2 | 18 | ||||
| 15:13 | 0:06 | all ore added | 1 | 24 | 1.2 | 19.2 | |||||
| 15:17 | reduce air | 8 | 800 | ||||||||
| 15:24 | :011 | 1 | 25 | ||||||||
| 15:31 | 0:07 | final charcoal added / burn down | 1 | 26 | 38.40 | ||||||
| 15:41 | reduce air | 5 | 500 | ||||||||
| 16:00 | approximate extraction time | ||||||||||
| TOTALS | |||||||||||
| TIME | pre-heat | 1:20 | hrs | ||||||||
| main sequence | 4 | hrs | |||||||||
| TOTAL | 5:30 + | hrs | |||||||||
| ORE | TOTAL - taconite | 19.2 | kg | ||||||||
| CHARCOAL | rough | 10.8 | kg | ||||||||
| graded | 38.4 | kg | |||||||||
| TOTAL | 48.4 | kg | |||||||||
| BLOOM | TOTAL | 6.4 | kg | ||||||||
| YIELD | 33 | % |