# Relationship history for MSHA mine 4002207

Current hierarchy: **Parks Bill → Sam'S Tipple Company → No 1 Tipple**

- 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:** Newport & Newport → No 1 Tipple; 1977-03-01 to 1979-06-26; source msha-controller-operator-history
- **controller_controls_mine:** Newport Melvin → No 1 Tipple; 1977-03-01 to 1979-06-26; source msha-controller-operator-history
- **controller_controls_operator:** Newport Melvin → Newport & Newport; 1977-03-01 to 1979-06-26; source msha-controller-operator-history
- **operator_operates_mine:** Central Kentucky Carbon Fuels Inc → No 1 Tipple; 1979-06-27 to 1984-09-16; source msha-controller-operator-history
- **controller_controls_mine:** Central Kentucky Carbon Fuels Inc → No 1 Tipple; 1979-06-27 to 1984-09-16; source msha-controller-operator-history
- **controller_controls_operator:** Central Kentucky Carbon Fuels Inc → Central Kentucky Carbon Fuels Inc; 1979-06-27 to 1984-09-16; source msha-controller-operator-history
- **operator_operates_mine:** Sam'S Tipple Company → No 1 Tipple; 1984-09-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Parks Bill → No 1 Tipple; 1984-09-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Parks Bill → Sam'S Tipple Company; 1984-09-17 to current/open; source msha-controller-operator-history