# Relationship history for MSHA mine 4601375

Current hierarchy: **Paul J  Sturgill → Madison Branch Management Inc → No 2 Surface**

- 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:** Bruce Mining Corp → No 2 Surface; 1950-01-01 to 1974-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Bruce Mining Corp → No 2 Surface; 1950-01-01 to 1974-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Bruce Mining Corp → Bruce Mining Corp; 1950-01-01 to 1974-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Gopher Mining Company → No 2 Surface; 1974-07-01 to 1983-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Groves S J & Sons Company → No 2 Surface; 1974-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Groves S J & Sons Company → Gopher Mining Company; 1974-07-01 to 1983-07-31; source msha-controller-operator-history
- **controller_controls_mine:** John C  Geupel → No 2 Surface; 1978-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Freeman Branch Mining → No 2 Surface; 1983-08-01 to 1992-02-25; source msha-controller-operator-history
- **controller_controls_operator:** John C  Geupel → Freeman Branch Mining; 1983-08-01 to 1992-02-25; source msha-controller-operator-history
- **controller_controls_mine:** Paul J  Sturgill → No 2 Surface; 1991-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Madison Branch Management Inc → No 2 Surface; 1992-02-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paul J  Sturgill → Madison Branch Management Inc; 1992-02-26 to current/open; source msha-controller-operator-history