Overview
| Stage | Production |
| Mine Type | Underground |
| Commodities |
|
| Mining Method |
|
| Production Start | ...  |
East Tennessee consists of a processing plant and three underground zinc mines: Young, Coy and Immel. Ore from the three mines is processed into zinc concentrate at the Young mine site.
In July 2019, Nyrstar’s operating business became majority owned by Trafigura. Production numbers have not been publicly available since then. |
Source:
p. 120
Contractors
- Subscription is required.
Summary:
East Tennessee Mines are comprised of three operating mines: Coy, Immel and Young, located approximately 30 kilometres north-east of Knoxville, Tennessee. Zinc mineralisation occurs in Mississippi Valley Type (‘MVT’) deposits as open-space fillings of breccias and fractures within limestones and dolomites.
Flow Sheet:
Summary:
- subscription is required.
Production:
| Commodity | Product | Units | 2018 | 2017 | 2016 | 2015 | 2014 |
|
Zinc
|
Metal in concentrate
|
kt
| 76 | 66 | 62 | 64 | 63 |
|
Zinc
|
Concentrate
|
kt
| 123 | 107 | 101 | 104 | 101 |
- Subscription is required.
Operational Metrics:
| Metrics | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 |
|
Tonnes milled
| 2,237 kt of ore | 2,003 kt of ore | 1,829 kt of ore | 1,985 kt of ore | 1,955 kt of ore | 2,019 kt of ore |
Reserves at December 31, 2018:
A cut-off grade of 2.5% Zn at Coy, 2.5% Zn at Immel and 1.9% Zn at Young, has been applied in the estimation of Mineral Resources.
| Category | Tonnage | Commodity | Grade |
|
Proven
|
0.34 Mt
|
Zinc
|
3.3 %
|
|
Probable
|
5.27 Mt
|
Zinc
|
4.4 %
|
|
Proven & Probable
|
5.61 Mt
|
Zinc
|
4.4 %
|
|
Measured
|
0.45 Mt
|
Zinc
|
3.5 %
|
|
Indicated
|
7.04 Mt
|
Zinc
|
4.4 %
|
|
Measured & Indicated
|
7.49 Mt
|
Zinc
|
4.3 %
|
|
Inferred
|
24.41 Mt
|
Zinc
|
3.7 %
|
Operating Costs:
| | Units | 2018 | 2017 | 2016 | 2015 |
|
Direct operating costs ($/t milled)
|
USD
| 38 | 40 | 38 | 42 |
Corporate Filings & Presentations:
- Subscription is required.
- Subscription is required.