EVENT	Date	October (29) 2016
	Description	Icelandic Turf - Hals
	Goal	full size build test
	Team	Richard Schwitzer
		Neil Peterson
		Darrell Markewitz
	records	Vandy Simpson ?
	photos	Richard Schwitzer / Darrell ?
FURNACE	Type	boxed turf with clay liner
	Material	dug sod, ball clay (+ ?)
	Interior	irregular oval tear drop	33 x 26
	Height	additional 18 flared top	57
	Wall	(photo estimate = 5 cm)	3
	Stack		37
	Base	17.5 at start, later	11
	Packing	wood ash	14
	Tuyere	standard copper
	Diameter		2
	Angle		-25
	Proud		4
	Air System	standard electric blower
	Extraction	bottom via arch
MATERIALS	Ore	DD 1 (NR)
	Charcoal	Maple
CLOCK	ELAPSED	EVENT	AIR		CHARCOAL			ORE
					UNIT	COUNT	TOTAL	Unit	TOTAL
		note - notes quite irregular	pressure	LpM	bucket		kg	kg	kg
			psi				1.97
			NR	E
1200		start wood splints pre-heat
1255	55	add rough charcoal to fill
1300		increase air		1200+
		wood ash at tuyere level				7	13.8
1317		openned tap arch to clear out clay			1	8	15.8
		spalled from walls, replaced charcoal
1330					2	10	19.7
1340		second open / clear clay
1342		previously removed charcoal, cleaned			3	13	25.6
1400		Temperatures :  top = 450C			1	11	21.7
		"30 cm from top" = 700 C
		"15 cm above tuyere" = 1150 C
1402		switch to graded charcoal			1	12	23.6
1410	8				1	13	23.6
1417	7	first additions of ore			1	14	27.6
1434	17				1	15	29.6	1	1
1450	16				1	16	31.5	1	2
1459	9				1	17	33.5	1	3
1510	11				1	18	35.5	1	4
1517	7				1	19	37.4	1	5
1529	12				1	20	39.4	1	6
1540	11				1	21	41.4	1	7
1557	14				1	22	43.3	1	8
1605	7	ore increase starts			1	23	45.3	1.5	9.5
1615		slag bubbling at tuyere, tapped
1623	18				1	24	47.3	1.5	11
1638	15	ore increase starts			1	25	49.3	2	13
1653	15				1	26	51.2	2	15
1707	14				1	27	53.2	2	17
1718	11				1	28	55.2	1	18
1733	15	ore increase starts			1	29	57.1	2	20
1747	14				1	30	59.1	3	23
1759	12	end of ore additions			1	31	61.1	2	25
1814	15	start burn down			1	32	63.0
1850	36	start extraction
TOTALS
	Charcoal		63	kg
	Ore	plus 2.8 kg tap slag	25	kg
	Bloom	(reported 3.2 includes gromps	2.53	kg
	Gromps		0.67
	Yield		10	%
	Condition	NR
	Quality	NR