Boliden — Regulatory Filings 2021

Feb 12, 2021

Mineral Reserves, December 31, 2020

		Quantity, ktonnes	2020
		2020	2019	Au g/t	Ag g/t	Cu %	Zn %	Pb %	Ni1) %	Co1) %	Pt g/t	Pd g/t	Te g/t
Aitik	Proven	702,000	726,000	0.14	1.2	0.22
	Probable	651,000	461,000	0.16	1.2	0.22
The Boliden Area
Polymetallic Mineralizations
Kristineberg	Proven	60	120	1.0	35	0.5	6.5	0.6
	Probable	2,400	3,530	0.5	36	0.6	5.4	0.3
Renström	Proven	350	300	2.4	141	0.5	5.6	1.0
	Probable	4,200	3,690	2.4	122	0.3	6.3	1.2
Total	Proven	410	430	2.2	125	0.5	5.7	0.9
Polymetallic Mineralizations	Probable	6,600	7,200	1.7	91	0.4	6.0	0.9
Gold Mineralizations
Kankberg	Proven	2,600	3,110	3.2	11								181
	Probable	1,900	1,930	3.5	6								135
Garpenberg	Proven	23,500	21,000	0.23	97	0.03	3.1	1.2
	Probable	66,000	53,800	0.35	93	0.05	2.7	1.3
Kevitsa	Proven	69,500	62,300	0.09		0.31			0.19	0.010	0.17	0.11
	Probable	58,700	78,000	0.10		0.33			0.24	0.010	0.20	0.14
Tara	Proven	1,000	1,100				4.7	2.2
	Probable	17,100	16,300				5.5	1.5

1) Kevitsa is reporting Ni and Co in sulphides. Rounding do occur.

Mineral Resources, December 31, 2020

		Quantity, ktonnes						2020
		2020	2019	Au g/t	Ag g/t	Cu %	Zn %	Pb %	Ni1) %	Co1) %	Pt g/t	Pd g/t	Te2) g/t	Mo g/t
Aitik Aitik	Measured Indicated Inferred	272,000 623,000 16,000	310,000 782,000 28,000	0.06 0.09 0.13	0.6 0.8 0.7	0.15 0.17 0.19
Nautanen	Measured Indicated Inferred	12,700 8,700	8,200 7,500	0.9 0.6	6 6	1.5 1.4								100 98
The Boliden Area Polymetallic Mineralizations
Kristineberg	Measured Indicated Inferred	50 6,600 7,800	50 5,190 6,120	0.7 0.4 0.3	45 65 60	1.3 0.8 0.8	4.2 4.6 3.4	0.2 0.5 0.5
Petiknäs N	Measured Indicated Inferred	360 1,700	360 1,710	8.1 4.4	72 54	1.6 0.9	2.8 2.1	0.3 0.3
Renström	Measured Indicated Inferred	3 1,300 980	1,160 1,510	0.6 1.4 1.4	39 81 74	0.04 0.6 0.5	1.7 4.1 4.8	0.3 0.8 0.9
Total Polymetallic Mineralizations	Measured Indicated Inferred	50 8,200 10,500	50 7,400 9,400	0.7 0.9 1.1	45 68 60	1.2 0.8 0.8	4.0 4.4 3.3	0.2 0.5 0.5
Gold Mineralizations Kankberg	Measured Indicated Inferred	200 670 1,500	200 670 1,460	3.5 4.0 3.9	8 8 7								121 162 161
Älgträsk	Measured Indicated Inferred	1,100 3,500	1,070 3,520	2.8 2.0	5 4
Total Gold Mineralizations	Measured Indicated Inferred	200 1,700 5,000	200 1,700 5,000	3.5 3.2 2.5	8 6 4
Garpenberg	Measured Indicated Inferred	3,900 32,600 25,500	4,300 40,000 24,100	0.33 0.35 0.42	94 89 57	0.06 0.05 0.07	3.4 2.7 2.5	1.7 1.3 1.4
Kevitsa	Measured Indicated Inferred	43,000 132,400 3,900	26,500 112,900 17,800	0.08 0.07 0.03		0.29 0.34 0.22				0.19 0.010 0.23 0.010 0.12 0.010	0.18 0.13 0.06	0.11 0.07 0.02
Tara	Measured Indicated Inferred	100 900 34,100	30 2,500 27,800				4.7 5.5 7.8	2.2 1.5 1.6
Laver	Measured Indicated Inferred	1,100 512,400 550,600	1,100 512,400 550,600	0.11 0.13 0.10	4 3 3	0.20 0.22 0.21								18 36 33
Rockliden	Measured Indicated Inferred	800 9,200	800 9,200	0.08 0.05	102 47	2.1 1.7	4.4 3.9	0.90 0.40

1)Kevitsa is reporting Ni and Co in sulphides. 2) Te only in Kankberg. Rounding do occur.