| TIME | | | EVENT | MEASUREMENT |
| Absolute | Relative | Elapsed | | Relative | Absolute | Total |
|
| 2:00 pm | | | slow preheat with split soft wood fire |
| 3:45 | 1:45 | | prep of bellows (attached to tuyere) |
| 3:50 | 1:50 | | start of bellows, split soft wood - various users | +/ - 60 /min | 120 l/min |
| 4:17 | 2:17 | | end of pre-heat phase |
|
| 4:17 | | | fill furnace with prepared charcoal | air: 60/min | 130 l/min |
| | | | fuel: 60 cm | 5275 cc | 5.3 l / kg |
| 4:32 | 0:15 | 15 min | add charcoal | air : 60/ min | 130 l/min |
| | | | fuel : 10 cm | 880 cc | 6.2 l |
| 4:37 | | 17 min | bellows operator changed |
| 4:42 | 0:25 | | optical pyrometer reading | | 2720 F |
| 4:44 | 0:27 | 12 min | add charcoal | fuel : 10 cm | 880 cc | 7.1 l |
| 4:48 | 0:31 | | air rate measured | air : 72 /min | 160 l/min |
| 4:53 | | 16 min | bellows operator changed |
| 4:57 | 0:40 | 13 min | add charcoal | fuel : 10 cm | 880 cc | 8.0 l |
| 4:59 | | 6 min | bellows operator changed | air : 54 /min | 120 l/min |
| 5:07 | | 8 min | bellows operator changed |
| 5:11 | | 4 min | bellows operator changed |
| 5:16 | | 5 min | bellows operator changed | air : 60 /min | 130 l/min |
| 0:59 | 19 min | add charcoal | fuel : 10 cm | 880 cc | 8.9 l |
| 5:29 | | 13 min | bellows operator changed | air : 72 /min | 160 l/min |
|
| 5:32 | 1:15 | | ore charge (one) | ore : 1.5 kg | | 1.5 kg |
| | 16 min | charcoal charge on top | fuel : 5 cm | 440 cc | 9.35 l |
| 5:41 | | 13 min | bellows operator changed |
| 5:42 | 1:25 | | optical pyrometer reading | | 2660 F |
| 5:44 | | | crack in smelter wall patched |
| 5:47 | 1:30 | 15 min | ore charge (two) | ore : 1.5 kg | | 3.0 kg |
| | | charcoal charge on top | fuel : 5 cm | 440 cc | 9.8 l |
| 5:53 | | | tuyere blocked / cleared with rod |
| 6:01 | 1:43 | 14 min | ore charge (three) on rear half only | ore : 1.5 kg | | 4.5 kg |
| | | charcoal charge on top | fuel : 5 cm | 440 cc | 10.25 l |
| | 20 min | change of bellows operator |
| 6:05 | | | tuyere blocked / cleared with rod |
| 6:06 | | | increase of bellows delivery pressure | air : 72 /min | 160 l/min |
| 6:11 | | 6 min | change of bellows operator |
| | | tuyere blocked / cleared with rod |
| 6:15 | 1:57 | 13 min | ore charge (four) on rear half only | ore : 1.5 kg | 6.0 kg |
| | | charcoal charge on top | fuel : 5 cm | 440 cc | 10.7 l |
| | | | air : 60 /min | 130 l/min |
| 6:18 | | | larger crack in furnace repaired |
| 6:23 | | 5 min | bellows resumed |
| 6:26 | | 15 min | change of bellows operator |
| 6:27 | | | optical pyrometer reading | | 2200 F |
| 6:29 | | | tuyere blocked / cleared with rod |
| 6:32 | 2:14 | 17 min | ore charge (five) on rear half only | ore : 1.5 kg | | 7.5 kg |
| | | charcoal charge on top | fuel : 7.5 cm | 660 cc | 11.4 l |
| 6:44 | | 18 min | change of bellows operator |
|
| 6:46 | 2:28 | 14 min | charcoal charge added | fuel : 7.5 cm | 660 cc | 12.1 l |
| 6:50 | | 6 min | change of bellows operator | air : 72 /min | 160 l/min |
| 6:55 | | 5 min | change of bellows operator |
| 6:58 | 2:40 | 14 min | charcoal charge added | fuel : 10 cm | 880 cc | 13.0 l |
| 7:04 | | | optical pyrometer reading | | 2680 F |
| 7:12 | 2:54 | 14 min | charcoal charge added | fuel : 7.5 cm | 660 cc | 13.7 l |
| 7:20 | | 25 min | change of bellows operator |
| 7:24 | | 4 min | change of bellows operator |
| 3:06 | 12 min | charcoal charge added | fuel : 5 cm | 440 cc | 14.2 l |
| 7:29 | | | repair of crack in smelter |
|
| 7:30 | 3:12 | 6 min | ore charge (reduction fines) added | ORE : .5 kg | ( 350 ml) | 8 kg |
| | | | fuel : 5 cm | 440 cc | 14.7 l |
| 7:40 | | | slowing of bellows rate during repair |
| 7:50 | | 26 min | change of bellows operator, rate continues slow |
| 7:53 | 3:35 | 17 min | final charcoal charge added | FUEL : 5 cm | 440 cc | 15.2 l |
|
| 8:15 | | 25 min | change of bellows operator, rate continues slow |
| 8:25 | | 10 min | change of bellows operator, rate continues slow |
| 8:40 | 4:05 | | end of firing |
|
| 8:40 | | | start scooping remaining charcoal from smelter |
| 8:45 | 4:10 | 5 min | bloom / slag bowl exposed |
| 8:54 | 4:19 | 9 min | bloom / slag mass extracted from smelter |
