| CLOCK | ELAPSED | EVENT | AIR | CHARCOAL | ORE | |||||
| UNIT | COUNT | TOTAL | UNIT | COUNT | TOTAL | |||||
| LpM * | bucket | kg | scoop | added | kg | |||||
| 1.8 * | 0.35 * | |||||||||
| (8:30) | team arrives on site | |||||||||
| (9:00) | start furnace build | |||||||||
| (10:40) | 1:40 | start pre-heat | ||||||||
| (11:00) | :40 | first charcoal addition | ||||||||
| re-set event clock | ||||||||||
| 12:00 | ungraded charcoal to fill | 400 | 3 E | 3 | 5.55 | |||||
| 12:40 | :40 | ungraded charcoal | 800 | 1 | 4 | 7.40 | ||||
| 12:48 | :08 | graded charcoal | 1 | 5 | 9.25 | |||||
| 12:59 | added top collar | |||||||||
| 13:02 | :14 | double charcoal addition (fill collar) | 2 | 7 | 12.95 | |||||
| ore additions started | ||||||||||
| 13:12 | :10 | charcoal & ore | 1 | 8 | 14.80 | 1 | 0.21 | 1 | 0.21 | |
| 13:20 | :08 | charcoal & ore | 1 | 9 | 16.65 | 2 | 0.7 | 3 | 0.91 | |
| 13:30 | :10 | charcoal & ore | 1 | 10 | 18.50 | 3 | 1.05 | 6 | 1.96 | |
| 13:40 | 0:10 | charcoal & ore | 1 | 11 | 20.35 | 3 | 1.05 | 9 | 3.01 | |
| 13:52 | 0:12 | charcoal & ore | 1 | 12 | 22.20 | 3 | 1.05 | 12 | 4.06 | |
| 14:03 | 0:11 | charcoal & ore | 1 | 13 | 24.05 | 4 | 1.4 | 16 | 5.46 | |
| 14:15 | 0:12 | charcoal & ore | 1 | 14 | 25.90 | 4 | 1.4 | 20 | 6.86 | |
| 14:26 | 0:11 | charcoal & ore | 1 | 15 | 27.75 | 5 | 1.75 | 25 | 8.61 | |
| 14:28 | adjust air | 900 | ||||||||
| 14:35 | :09 | charcoal & ore | 1 | 16 | 29.60 | 6 | 2.1 | 31 | 10.71 | |
| 14:46 | 0:11 | charcoal & ore | 1 | 17 | 31.45 | 6 | 2.1 | 37 | 12.81 | |
| 14:56 | 0:10 | charcoal & ore | 1 | 18 | 33.30 | 6 | 2.1 | 43 | 14.91 | |
| 15:03 | 0:07 | charcoal & ore | 1 | 19 | 35.15 | 5 | 1.75 | 48 | 16.66 | |
| 15:08 | 0:05 | charcoal & ore | 1 | 20 | 37.00 | 5 | 1.75 | 53 | 18.41 | |
| 15:14 | 0:06 | charcoal & ore | 1 | 21 | 38.85 | 5 | 1.75 | 58 | 20.16 | |
| 15:24 | 0:10 | charcoal & ore | 1 | 22 | 40.70 | 6 | 2.1 | 64 | 22.26 | |
| 15:35 | slag tap | |||||||||
| 15:38 | 0:14 | charcoal & ore | 1 | 23 | 42.55 | 7 | 2.45 | 71 | 24.71 | |
| 15:49 | 0:11 | charcoal & ore | 1 | 24 | 44.40 | 6 | 2.1 | 77 | 26.81 | |
| 15:55 | 0:06 | charcoal & ore | 1 | 25 | 46.25 | 6.5 | 2.275 | 83.5 | 29.09 | |
| start burn down phase | ||||||||||
| 16:20 | :25 | last cover layer of charcoal | 1 | 26 | 48.10 | |||||
| 16:41 | 0:21 | extraction begins | 700 | |||||||
| remove top layer of bricks | ||||||||||
| AIR | all approximate (guide marks only) | |||||||||
| CHARCOAL | based on past average weight | |||||||||
| ORE | based on average scoop weight | |||||||||
| TOTALS | Charocal | 48 kg | ||||||||
| Ore - as scoops / bucket weight | 29 kg | 24 kg | ||||||||
| Time | 4:45 + | |||||||||
| Bloom | 2.65 kg | |||||||||
| Yield (estimate only) | 9% | 11% |