Calvert Mine — Inspections
Total: 99 inspections
| Begin | End | Operator | Hours | Inspectors |
|---|---|---|---|---|
| 02/23/2026 | 02/26/2026 | NAES Corporation | 43.00 | 1 |
| 07/15/2025 | 07/23/2025 | NAES Corporation | 81.00 | 2 |
| 07/14/2025 | 07/14/2025 | NAES Corporation | 8.75 | 1 |
| 01/27/2025 | 01/28/2025 | NAES Corporation | 9.50 | 1 |
| 10/09/2024 | 10/21/2024 | NAES Corporation | 55.50 | 1 |
| 05/22/2024 | 05/22/2024 | NAES Corporation | 9.50 | 1 |
| 04/16/2024 | 04/24/2024 | NAES Corporation | 46.25 | 1 |
| 02/26/2024 | 03/14/2024 | NAES Corporation | 23.75 | 1 |
| 02/04/2024 | 02/23/2024 | Panamint Power dba Walnut Cree... | 74.50 | 1 |
| 07/17/2023 | 07/21/2023 | Black Walnut Management Compan... | 58.50 | 1 |
| 05/17/2023 | 05/17/2023 | Black Walnut Management Compan... | 4.50 | 1 |
| 01/10/2023 | 01/20/2023 | Black Walnut Management Compan... | 52.00 | 1 |
| 04/11/2022 | 04/19/2022 | Black Walnut Management Compan... | 66.00 | 1 |
| 03/08/2022 | 03/16/2022 | Black Walnut Management Compan... | 92.25 | 1 |
| 04/05/2021 | 04/14/2021 | Black Walnut Management Compan... | 80.00 | 1 |
| 10/13/2020 | 10/28/2020 | Black Walnut Management Compan... | 129.75 | 2 |
| 06/02/2020 | 06/12/2020 | Black Walnut Management Compan... | 70.00 | 1 |
| 11/20/2019 | 01/13/2020 | Kiewit Mining Group | 185.00 | 1 |
| 09/03/2019 | 09/18/2019 | Kiewit Mining Group | 91.00 | 2 |
| 01/08/2019 | 03/21/2019 | Kiewit Mining Group | 176.50 | 1 |
| 04/02/2018 | 09/18/2018 | Kiewit Mining Group | 207.50 | 2 |
| 01/17/2018 | 03/26/2018 | Kiewit Mining Group | 196.00 | 1 |
| 10/02/2017 | 12/29/2017 | Kiewit Mining Group | 41.75 | 1 |
| 04/17/2017 | 09/19/2017 | Kiewit Mining Group | 212.00 | 1 |
| 03/01/2017 | 03/29/2017 | Kiewit Mining Group | 217.50 | 3 |
| 10/07/2016 | 12/14/2016 | Kiewit Mining Group | 8.75 | 1 |
| 06/07/2016 | 06/29/2016 | Walnut Creek Mining Company | 139.00 | 1 |
| 01/04/2016 | 03/30/2016 | Walnut Creek Mining Company | 16.00 | 1 |
| 10/05/2015 | 12/17/2015 | Walnut Creek Mining Company | 203.00 | 1 |
| 04/01/2015 | 07/13/2015 | Walnut Creek Mining Company | 174.50 | 1 |
| 10/20/2014 | 01/07/2015 | Walnut Creek Mining Company | 160.00 | 1 |
| 04/03/2014 | 05/29/2014 | Walnut Creek Mining Company | 193.00 | 1 |
| 01/29/2014 | 02/25/2014 | Walnut Creek Mining Company | 128.00 | 1 |
| 10/10/2013 | 10/17/2013 | Walnut Creek Mining Company | 6.00 | 1 |
| 07/02/2013 | 09/06/2013 | Walnut Creek Mining Company | 170.50 | 3 |
| 04/22/2013 | 04/29/2013 | Walnut Creek Mining Company | 14.50 | 1 |
| 03/20/2013 | 04/19/2013 | Walnut Creek Mining Company | 19.00 | 1 |
| 12/04/2012 | 02/04/2013 | Walnut Creek Mining Company | 204.25 | 3 |
| 04/09/2012 | 06/04/2012 | Walnut Creek Mining Company | 150.00 | 2 |
| 12/19/2011 | 01/25/2012 | Walnut Creek Mining Company | 64.50 | 1 |
| 11/02/2011 | 11/02/2011 | Walnut Creek Mining Company | 10.00 | 1 |
| 05/16/2011 | 08/22/2011 | Walnut Creek Mining Company | 119.50 | 1 |
| 11/18/2010 | 03/02/2011 | Walnut Creek Mining Company | 140.50 | 2 |
| 08/24/2010 | 09/07/2010 | Walnut Creek Mining Company | 59.50 | 1 |
| 03/21/2010 | 03/31/2010 | Walnut Creek Mining Company | 127.75 | 2 |
| 07/12/2009 | 09/29/2009 | Walnut Creek Mining Company | 104.50 | 1 |
| 03/30/2009 | 03/30/2009 | Walnut Creek Mining Company | 7.00 | 1 |
| 12/03/2008 | 02/21/2009 | Walnut Creek Mining Company | 57.00 | 2 |
| 11/15/2008 | 11/15/2008 | Walnut Creek Mining Company | 5.00 | 1 |
| 07/23/2008 | 08/27/2008 | Walnut Creek Mining Company | 82.50 | 2 |