| CLOCK | ELAPSED | EVENT | CHARCOAL | ORE | |||
| UNIT | COUNT | UNIT | COUNT | TOTAL | |||
| bucket | kg | kg | |||||
| 9:35 | start wood splints pre-heat | ||||||
| 10:30 | start intermitent air | ||||||
| 11:09 | 1:04 | fill with rough charcoal | |||||
| 11:22 | switch to graded charcoal | ||||||
| main sequence start | |||||||
| 11:40 | 0:18 | charcoal | 1 | 1 | |||
| 12:00 | 0:20 | charcoal | 1 | 2 | |||
| 12:19 | 0:19 | ore as 3 @ 250 | 1 | 3 | 3 | 3 | 0.80 |
| 12:38 | 0:19 | ore as 4 @ 250 | 1 | 4 | 4 | 7 | 1.88 |
| 12:55 | drop slag bowl / tuyere to 30 • | ||||||
| 12:58 | 0:20 | 1 | 5 | 4 | 11 | 2.95 | |
| 13:12 | 0:14 | 1 | 6 | 4 | 15 | 4.02 | |
| 13:27 | 0:15 | ore as 5 @ 250 | 1 | 7 | 5 | 20 | 5.36 |
| 13:41 | 0:14 | ore as 6 @ 250 | 1 | 8 | 6 | 26 | 6.97 |
| 13:56 | 0:15 | 1 | 9 | 6 | 32 | 8.58 | |
| 14:09 | 0:13 | 1 | 10 | 6 | 38 | 10.18 | |
| 14:28 | 0:19 | ore as 8 @ 250 | 1 | 11 | 8 | 46 | 12.33 |
| 14:45 | 0:17 | 1 | 12 | 8 | 54 | 14.47 | |
| 15:03 | 0:18 | 1 | 13 | 8 | 62 | 16.62 | |
| 15:15 | last ore addition | 5 | 67 | 17.96 | |||
| remainder charcoal added | 1 | 14 | |||||
| start burn down | |||||||
| 15:42 | air decrease | ||||||
| 15:50 | extraction | ||||||
| TOTAL | charcoal | ||||||
| ore | DD-2 | 18 kg | |||||
| time (main) | 3:30 | ||||||
| bloom | 2.9 kg | ||||||
| yield | 16% | ||||||
| gromps collected | 1 kg | ||||||
| AIR | human powered via smelter bellows | ||||||
| 5 primary operators @72 / sec | |||||||
| average delivery @ 700 LpM |