CLOCK	ELAPSED	EVENT	AIR	CHARCOAL			ORE
				UNIT	COUNT	TOTAL	UNIT	TOTAL
			mark	bucket		kg	kg	kg
						2.20
12:00		start wood splints pre-heat
12:55	:55	start gentle air
14:06	2:06	fill with graded charcoal	8 *	5	5	11.00
12:00		start main sequence
12:09	:09	first measured bucket		1	6	13.20
12:17	:08			1	7	15.40
12:25	:08			1	8	17.60
12:35	:10		9 *	1	9	19.80
12:53	0:18			1	10	22.00
13:02	0:09			1	11	24.20
13:12	0:10	start first ore additions		1	12	26.40
13:28	0:16			1	13	28.60	1	1
13:45	0:17			1	14	30.80	1	2
13:53							1	3
14:00	0:15			1	15	33.00
14:04							1	4
14:10	:10			1	16	35.20
14:16							1	5
14:26	0:10			1	17	37.40	1	6
14:38	0:12			1	18	39.60	1	7
14:48	0:10			1	19	41.80	1	8
14:56	0:08			1	20	44.00	1	9
15:09	0:13			1	21	46.20	1	10
15:17	0:08			1	22	48.40	1	11
15:27	0:10			1	23	50.60	1	12
15:37	0:10			1	24	52.80	1	13
15:52	0:15			1	25	55.00	1	14
16:03	0:11			1	26	57.20	1	15
16:13	0:10			1	27	59.40	1.5	16.5
16:30	0:17			1	28	61.60	2	18.5
16:43	0:13			1	29	63.80	2	20.5
16:57	0:14			1	30	66.00	2	22.5
17:14	0:17			1	31	68.20	2	24.5
		start burn down
		(no record of extraction time)
		Totals
		Charcoal	68 +	kg
		Ore	24.5	kg
		Bloom (at first compaction)	5.4	kg
		Yield	22	%
		blockage to air flow (!)	*
		reduced 1/3 to 1/2 measure