Batu Mas Drilling » Robust Resources

$1.255 ROL.ASX

18/03/2012 8:56 pm

Batu Mas Drilling

Romang Island

Lakuwahi Project

Batu Mas

Batu Hitam

Batu Jagung

North Romang Project

Wyaru

Kiahar

Philippines


	Maiden JORC Code compliant Resources Estimate from Lakuwahi. Read more


	Exploration Drilling Significantly Expands Mineralisation at Batu Hitam Prospect where over 90% of holes intersected potentially economic mineralised rock. Read more


	206 METRES of Continuous Precious and Base Metal-Rich Mineralisation Drilled on the North-Eastern Extensions of Batu Mas, Romang Island Indonesia. Read more

Metallurgical test work to date indicates excellent recoveries of 94-95% and strike length is over 350 metres and remains open in all directions. Initial results from the 3D IP survey carried out have extended the anomaly at Batu Mas by as much as 20 times its current size. In addition, a number of new drill targets have been defined.

Recent Drilling Highlights

	LWD 051	57.5 metres at 6.75 g/t Au equivalent† Incl. 27m at 9.36 g/t Au equivalent and 15m at 217 g/t Ag and 3.31 g/t Au
	LWD 055	21 metres at 2.92 g/t Au equivalent Incl. 10m at 4.74 g/t Au equivalent 83 metres at 2.7% comb. Pb+Zn+Cu Incl. 28m at 5.3% comb. Pb+Zn+Cu
	LWD 068	74 metres at 2.4% comb. Pb+Zn+Cu Incl. 3m at 4.3% Cu
	LWD 072	57 metres at 3.83 g/t Au equivalent Incl. 32m at 5.76 g/t Au equivalent and 20m at 7.40 g/t Au equivalent 54m at 2.75% combined Pb+Zn+Cu
	LWD 074	58 metres at 2.71 g/t Au equivalent Incl. 13.7m at 4.47 g/t Au equivalent and 6.3m at 1.69% Cu

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Batu Mas Drill Results (Hide >>>)

Hole #	From (m)	To (m)	Au Equiv (g/t)	Ag (g/t)	Cu (%)	Pb (%)	Zn (%)
LWD015	0	41	2.98	100.0	N/A	.37	N/A
LWD016	10	20	1.15	36.0	N/A	1.31	N/A
LWD017	22	49	2.99	47.7	N/A	N/A	N/A
	33	38	4.52	5.0	N/A	N/A	N/A
	42	49	5.32	168.7	N/A	N/A	N/A
LWD018	38.4	45.05	.88	34.44	N/A	N/A	N/A
LWD019	46.9	65	.73	10.84	N/A	N/A	N/A
LWD020	10	10.95	2.43	71.0	N/A	N/A	N/A
	17.95	51	3.29	110.66	N/A	N/A	N/A
	28	39	4.34	113.0	N/A	N/A	N/A
LWD021	0	2.45	3.59	29.24	N/A	N/A	N/A
	27.35	47.95	1.83	45.7	N/A	N/A	N/A
LWD022	33	40	1.35	20.56	N/A	N/A	N/A
LWD023	22.5	24.5	1.7	46.0	N/A	.93	.05
	53.5	55.8	.25	10.0	N/A	1.49	.74
	70.65	73	.4	4.0	N/A	.8	1.53
	89.75	90.15	.57	22.0	N/A	3.63	4.15
LWD024	23.75	36.25	3.03	107.0	N/A	.49	.01
	33.95	36.25	7.09	333.0	N/A	.5	N/A
	43.75	78	.34	8.0	.09	1.27	1.16
	43.75	45.75	1.05	42.0	N/A	5.19	.03
	50.5	72.75	.31	7.0	N/A	1.16	1.48
	56.05	57.75	.68	24.0	N/A	4.7	3.48
LWD025	8.7	13.7	.19	8.0	N/A	.25	1.1
	22.7	24.7	1.74	44.0	N/A	.9	.03
	45.7	46.5	.79	6.0	N/A	1.13	.06
	86.7	109.7	.92	23.49	.15	2.54	2.27
	90.7	94.4	1.92	54.78	.33	8.76	4.47
	92.1	94.1	2.99	89.0	.54	15.0	6.04
LWD046	0	23	6.7	67.0	.27	1.34	1.68
	3	11	7.4	130.0	.4	2.05	3.42
	6.5	19	.86	70.0	.46	2.24	2.94
	8	12	2.71	84.0	.51	4.02	7.72
LWD048	0	61	4.5	61.0	.25	.32	N/A
	40	70	.63	89.0	.44	.98	.38
	40	55	N/A	168.0	.8	.71	.05
	58	70	N/A	11.0	.05	1.42	.87
LWD049	8.5	49	1.97	47.0	N/A	.48	N/A
	38	54	.17	100.0	.2	1.43	.26
	71	76	.46	11.0	.06	.38	1.95
LWD051	1.5	59	.18	90.0	N/A	1.09	N/A
	3	30	.49	47.0	N/A	N/A	N/A
	29	51	.29	159.0	.09	2.47	.02
	26	41	.34	217.0	N/A	2.4	N/A
	29	53	.17	155.0	N/A	2.4	N/A
LWD054	2	31	.6	26.0	N/A	.19	N/A
LWD055	2	23	.91	33.24	N/A	.39	N/A
	2	12	4.74	16.1	.12	.73	N/A
	28	111	.29	8.94	.18	1.17	1.39
	70	98	.45	17.0	.25	2.15	2.9
LWD058	11	24	1.0	23.92	N/A	N/A	N/A
	31	117	.21	4.0	.05	.56	.94
	36	44	.65	16.0	.08	1.02	3.87
LWD062	1.5	84	1.59	34.0	N/A	N/A	N/A
	22.5	34	3.07	114.0	N/A	N/A	N/A
	59	72	3.72	44.0	N/A	N/A	N/A
LWD064	10	15	.99	38.4	N/A	N/A	N/A
	37	49	1.48	54.08	.21	1.58	.31
	73	86	.53	14.0	.06	1.01	1.49
LWD065	2	63.5	1.3	42.88	N/A	N/A	N/A
	63.5	83.5	.46	12.75	.07	.98	1.35
	157	160	.24	9.67	.06	1.11	4.45
LWD068	1	40	1.03	19.18	N/A	N/A	N/A
	11	24	1.73	30.08	N/A	N/A	N/A
	58	132.5	.31	7.72	.35	1.0	1.01
	58	67	.74	19.67	1.73	1.83	.43
	62	65	1.15	30.67	4.31	2.61	.7
	84.5	90.5	.53	21.0	.45	2.8	2.45
LWD069	8	20	1.89	8.67	N/A	N/A	N/A
	63	87	1.18	27.85	.15	.55	.53
	68.5	153.5	.45	11.41	.05	.52	.73
	119	122	.39	8.0	.04	1.59	2.95
LWD071	0	41	1.71	43.91	N/A	N/A	N/A
	2	8	3.18	41.17	N/A	N/A	N/A
	19.5	23.5	3.39	116.5	N/A	N/A	N/A
	24.5	50	1.01	23.1	.29	1.06	.46
	36	42	1.19	26.0	.71	1.29	.29
LWD072	0	57	3.83	39.64	N/A	N/A	N/A
	21	53	5.76	64.65	N/A	N/A	N/A
	26	51	6.7	78.67	N/A	N/A	N/A
	29	49	7.4	84.84	N/A	N/A	N/A
	49	103	.86	20.57	.09	1.79	.86
LWD074	0	58	2.71	23.16	N/A	N/A	N/A
	40.5	54.2	4.47	74.12	N/A	N/A	N/A
	54.2	60.5	1.35	54.24	1.69	.54	.23
LWD075	13	50	1.54	55.51	N/A	N/A	N/A
	30	32	4.5	181.5	N/A	1.06	N/A
	31	91	.63	19.82	.07	.74	.29
LWD076	0	2	N/A	N/A	.04	1.11	.82
	8	12	N/A	N/A	.13	.32	1.0
LWD078	30	37	1.97	51.29	N/A	N/A	N/A
	41	131	.17	2.82	.03	.59	.65
	41	47	.46	12.83	.09	2.89	1.83
LWD079	2	4	.12	N/A	.03	.74	.31
LWD081	18	146	.18	1.99	.06	.33	.65
	19	21	.49	16.0	.1	1.49	3.18
	80	81	.29	10.0	.1	3.76	7.11
	97	100	.34	11.67	.13	3.09	4.67
	107	109	.17	5.0	.17	1.05	3.43
LWD083	29	43	5.13	203.0	.26	1.84	3.26
	34	37	11.97	556.0	.43	3.42	7.41
	29	49	3.76	145.4	.24	1.55	2.72
	41	43	2.43	62.5	.39	2.12	4.77
LWD084	83	103	.46	13.78	.43	2.71	5.52
	86	97	.6	21.77	.62	4.21	9.44
	86	91.5	.91	40.45	1.05	7.67	16.42

Notes:
The information in this announcement that relates to Exploration Results, Mineral Resources or Ore Reserves is based on complied by John Levings BSc, who is a Member of The Australasian Institute of Mining and Metallurgy and who has more than ten years experience in the field of activity being reported on. Mr Levings is a director of the Company. Mr Levings has sufficient experience, which is relevant to the style of mineralisation and type of deposit under consideration and to the activity, which he is undertaking to qualify as a Competent Person as defined in the 2004 Edition of ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Mr Levings consents to the inclusion in the announcement of the matters based on his information in the form and context in which it appears. 1 All thicknesses are down-hole drilled thicknesses. 2 Au Equivalent (Gold Equivalent) = gold assay + (silver assay / 60) where the number 60 represents the ratio where 60 g/t Ag = 1g/t Au. This ratio was calculated from the fifteen year average prices of gold and silver prices from January 1995 to 30 December 2010 World Bank Commodity Price Data (average Gold price is USD $515.98 per Troy Ounce and average Silver price is USD $8.58 per Troy Ounce). Metallurgical test results previously reported have indicated high extraction rates (94%-95%) for both gold and silver using standard technology. 3 Cu Equivalent (Copper Equivalent) = [(copper assay x copper price x 22.05) + (gold assay x gold price/31.1) + (silver assay x silver price/31.1) + (zinc assay x zinc price x 22.05) + (lead assay x lead price x 22.05)] / (copper price x 22.05). The metal prices used in this copper equivalent calculation were taken from the average of the 12 months from January to December 2010 taken from published World Bank Commodity Price Data. The metal prices thus used in the calculation are: Copper: USD $3.42 per pound, gold: USD $1,224.66 per Troy ounce, silver USD $20.20 per Troy ounce, Lead USD $0.9745 per pound and Zinc USD $0.9801 per pound. Preliminary metallurgical test results previously reported (30th November 2010) indicate high and broadly equivalent flotation recoveries for all metals used in the copper equivalent calculation (gold recoveries average 84.3%, silver 93.0%, zinc 97.2%, lead 91.1% and copper 94.6%).

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