6e2549b8_DARC_Iron_Smelting___Oct_2004__Notes
[Absolute Time] 2250h [Elapsed Time] T+7:44 [Notes] 
10 cm of charcoal added. At this point 6 charges should be in the hot spot with the final charge only 5 cm higher. Around this point we observed that additional yellow (oxidizing) flame was appearing across the surface of the charcoal. Lots of blue flame still.
DARC Iron Smelting - Oct 2004
Notes