# Relationship history for MSHA mine 4404800

Current hierarchy: **Sperow Joe → C H & S Coal Company → 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

- **controller_controls_mine:** Strouth Philmon Et Al → No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Phil Strouth Coal Company → No 1; 1977-08-01 to 1978-12-26; source msha-controller-operator-history
- **controller_controls_operator:** Strouth Philmon Et Al → Phil Strouth Coal Company; 1977-08-01 to 1978-12-26; source msha-controller-operator-history
- **operator_operates_mine:** Three Star Coal Company → No 1; 1978-12-27 to 1979-08-14; source msha-controller-operator-history
- **controller_controls_mine:** Mullins Clell → No 1; 1978-12-27 to 1979-08-14; source msha-controller-operator-history
- **controller_controls_operator:** Mullins Clell → Three Star Coal Company; 1978-12-27 to 1979-08-14; source msha-controller-operator-history
- **controller_controls_mine:** Newberry Ronald Et Al → No 1; 1979-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Three Star Coal Company → No 1; 1979-08-15 to 1988-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Newberry Ronald Et Al → Three Star Coal Company; 1979-08-15 to 1988-07-25; source msha-controller-operator-history
- **operator_operates_mine:** C H & S Coal Company → No 1; 1988-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sperow Joe → No 1; 1988-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sperow Joe → C H & S Coal Company; 1988-07-26 to current/open; source msha-controller-operator-history