# Relationship history for MSHA mine 4605772

Current hierarchy: **Adkins Timothy C & William G → Grizzly Mining Inc → Mine No 1**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Fry Industries Inc → Mine No 1; 1978-04-01 to 1980-07-27; source msha-controller-operator-history
- **controller_controls_mine:** Fry Irvin L → Mine No 1; 1978-04-01 to 1980-07-27; source msha-controller-operator-history
- **controller_controls_operator:** Fry Irvin L → Fry Industries Inc; 1978-04-01 to 1980-07-27; source msha-controller-operator-history
- **controller_controls_mine:** Anker Group Inc → Mine No 1; 1978-09-01 to 2006-01-19; source msha-controller-operator-history
- **operator_operates_mine:** Juliana Mining Company Inc → Mine No 1; 1980-07-28 to 1983-11-17; source msha-controller-operator-history
- **controller_controls_operator:** Anker Group Inc → Juliana Mining Company Inc; 1980-07-28 to 1983-11-17; source msha-controller-operator-history
- **operator_operates_mine:** Grizzly Mining Inc → Mine No 1; 1983-11-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Adkins Timothy C & William G → Mine No 1; 1983-11-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Adkins Timothy C & William G → Grizzly Mining Inc; 1983-11-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** International Coal Group Inc (ICG) → Mine No 1; 2006-01-20 to 2011-06-14; source msha-controller-operator-history
- **controller_controls_operator:** International Coal Group Inc (ICG) → Juliana Mining Company Inc; 2006-01-20 to 1983-11-17; source msha-controller-operator-history
- **controller_controls_mine:** Arch Resources Inc → Mine No 1; 2011-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arch Resources Inc → Juliana Mining Company Inc; 2011-06-15 to 1983-11-17; source msha-controller-operator-history