Instalación de relaves de Panasqueira abandonada, situada sobre el río Zêzere, Cabeço do Pião, 2019
| Estado | Mina subterránea en explotación | |
|---|---|---|
| Concesión | DGEG C-18 | |
| Minerales | W Cu Sn | |
| Empresa | Origen | Inicio | Fin |
| Almeida, Silva Pinto e Comandita | Portugal | 1898 | 1911 |
| The Wolfram Mining and Smelting Company Limited | United Kingdom | 1911 | 1928 |
| Beralt Tin and Wolfram Limited | United Kingdom | 1928 | 1973 |
| Beralt Tin and Wolfram Portugal, S.A. | Portugal | 1973 | |
| Charter Consolidated PLC | United Kingdom | 1967 | 1983 |
| Minorco S.A. | Luxembourg | 1983 | 1994 |
| Avocet Mining PLC | United Kingdom | 1994 | 2003 |
| Primary Metals Inc. | Canada | 2003 | 2005 |
| Almonty Industries Inc. | Canada | 2005 | 2007 |
| Sojitz Ventures Inc. | Japan | 2007 | 2016 |
| Almonty Industries Inc. | Canada | 2016 |