reference metal prices			US$/oz Ag	US$/lb Pb	US$/lb Zn
			4.50	0.25	0.50
			US$/oz Ag	US$/t Pb	US$/t Zn
			4.50	551	1 102
	t ore	average thickness meters	Ag oz/t	Pb %	Zn %	US$/t equi	ag oz/t equi	ag g/t equi
economic reserves
immediately accessible	697 415	4.45	4.77	3.12%	3.47%	76.90	17.09	531.43
accessible after one year operation	820 510	3.62	5.28	2.97%	3.12%	74.51	16.56	514.93
accessible after more than 1 year	1 088 729	1.52	5.77	2.22%	2.79%	68.94	15.32	476.47
total economic	2 606 654	2.96	5.35	2.70%	3.08%	72.82	16.18	503.28
sub economic reserves
immediately accessible	396 590	5.8	3.33	2.22%	3.09%	61.27	13.62	423.44
accessible after one year operation	317 465	4.74	3.96	2.18%	2.40%	56.28	12.51	388.96
accessible after more than 1 year	1 017 525	4.59	3.37	2.07%	2.57%	54.89	12.20	379.37
total sub economic	1 731 580	4.89	3.47	2.12%	2.66%	56.61	12.58	391.22
grand total	4 338 234	3.74	4.60	2.47%	2.91%	66.35	14.74	458.55
economic reserves as re-evaluated by Alianza 1995	t ore	average thickness meters	Ag oz/t	Pb %	Zn %	US$/t equi	ag oz/t equi	ag g/t equi
	2 788 365	3.95	4.29	2.52%	3.09%	67.24	14.94