EVENT	Date	06-Aug-17
	Description	Celtic Iron Age
	Goal	Slag pit / demonstration
	Team	Darrell Markewitz
		Dirk Spodeltuer
		Richard Hiden
		Shonna Johnson
		Pete Hill
	photos	Kelly Probyn-Smith
FURNACE	Type	Slag Pit
	Material	clay / sand / horse manure cobb
	Interior		28
	Height		62
	Stack		46
	Base	as 1 cm thick disk	16
	Packing	no additional
	Tuyere	hand made clay
	Diameter		2.5
	Angle		-23
	Proud		4
	Air System	shop vac
	Extraction	bottom via arch
MATERIALS	Ore	DD 1 (red)
	Charcoal	local Scottish types
CLOCK	ELAPSED	EVENT	AIR		CHARCOAL			ORE
actual					UNIT	COUNT	TOTAL	Unit	TOTAL
			pressure	LpM	bucket		kg	kg	kg
			psi				1.75
1000		start wood splints pre-heat
1140	0	attempt to start air - problems
1200	T 2:00	air solved / fill with rough charcoal
1200		main sequence start		??	2.75	2.75	4.8
1204		finish fill			0.25	3	5.3
1207	7				1	4	7.0
1214	7	air intake reduced by 50%		??	1	5	8.8
1222	8				1	6	10.5
1230	8	graded fuel			1	7	12.3
1237	7				1	8	14.0
1246	9				1	9	15.8
1259	13	interuption in air flow			1	10	17.5
1307	8				1	11	19.3
1315	8	first ore charge			1	12	21.0	0.5	0.5
1325	10				1	13	22.8	1	1.5
1334	9				1	14	24.5	1	2.5
1341	7				1	15	26.3	1	3.5
1350	9				1	16	28.0	1.5	5
1400	10				1	17	29.8	1.5	6.5
1407	7				1	18	31.5	1.5	8
1416	9				1	19	33.3	1.5	9.5
1427	11				1	20	35.0	2	11.5
1431		increase air
1435	8				1	21	36.8	1.5	13
1444	9				1	22	38.5	2	15
1451	7				1	23	40.3	1.5	16.5
1459	8				1	24	42.0	1.5	18
1507	8	last ore charge			1	25	43.8	2	20
1514	7				1	26	45.5
		start burn down
TOTALS
	Charcoal		46	kg
	Ore	plus 2.8 kg tap slag	20.0	kg
	Bloom	no consolodated bloom		kg
	Gromps		2.94	kg
	Yield			%
	Condition	metallic gromps only
	Quality