EVENT Date 16-Jul-17
Description Viking Age at Vinland
Goal demonstration
Team Mark Pilgrim
Darrell Markewitz
Richard Schwitzer
(L'Anse aux Meadows staff)
FURNACE Type Norse Short Shaft
Material clay / sand / horse manure cobb
Interior 23.5
Height 64.5
Stack 42.5
Base as 1 cm thick disk 19
Packing no additional
Tuyere standard ceramic
Diameter 2
Angle -23.5
Proud 5
Air System twin chamber (norse) 'smelting bellows
Extraction bottom via arch / furnance broken
MATERIALS Ore DD 1 (red)
Charcoal maple
CLOCK ELAPSED EVENT AIR CHARCOAL ORE
actual UNIT COUNT TOTAL Unit TOTAL
pressure LpM bucket kg kg kg
psi 2.0
730 start wood splints pre-heat
1014 2:45 start gentle air ??
1029 seal tap arch
1041 T 2:41 fill with ungraded fuel
1041 main sequence start ?? 3 3 6.0
1102 19 start graded fuel 1 4 8.0
1117 15 1 5 10.0
1133 16 1 6 12.0
1159 26 1 7 14.0
1217 18 first ore charge 1 8 16.0 1 1
1231 14 1 9 18.0 1 2
1240 9 1 10 20.0 1 3
1257 17 1 11 22.0 1 4
1304 7 1 12 24.0 1 5
1338 24 1 13 26.0 1.5 6.5
1358 20 1 14 28.0 1.5 8
1413 15 slag tap 1 15 30.0 1.5 9.5
1423 11 1 16 32.0 1.5 11
1441 18 1 17 34.0 1.5 12.5
1446 slag tap
1515 29 messy records 1 18 36.0 1.5 14
1527 12 messy records 1 19 38.0 1.5 15.5
1538 11 1 20 40.0 1.5 17
1556 18 1 21 42.0 1.5 18.5
1605 slag tap
1612 16 1 22 44.0 2 20.5
1630 slag tap
1632 20 1 23 46.0 2 22.5
1644 slag tap
1653 9 1 24 48.0 2 24.5
1706 13 1 25 50.0 1.5 26
slag tap
1722 16 1 26 52.0 1.5 27.5
1729 slag tap
1507 last ore - handful LAM bog ore 1 27 54.0
1736 24 1 28 56.0
1739 slag tap
1749 slag tap
1752 16 last charcoal to cover 1 29 58.0
start burn down
1756 slag tap
1845 T 53 ready to extact
1915 extraction - wait for scheduling 
TOTALS
Charcoal 58 kg
Ore 27.5 kg
Bloom no consolodated bloom 5.5 kg
Gromps kg
Yield 20% %
Condition fairly dense (on cutting)
Quality