# Relationship history for MSHA mine 4601270

Current hierarchy: **Chris  Cline → Tiger Coal Company Inc → 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:** Eastern Associated Coal Corp → No 1; 1950-01-01 to 1987-05-14; source msha-controller-operator-history
- **controller_controls_mine:** Eastern Gas & Fuel Association → No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eastern Gas & Fuel Association → Eastern Associated Coal Corp; 1950-01-01 to 1987-05-14; source msha-controller-operator-history
- **controller_controls_mine:** Hanson PLC → No 1; 1987-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Eastern Associated Coal Corp → No 1; 1987-05-15 to 1994-12-05; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Eastern Associated Coal Corp; 1987-05-15 to 1994-12-05; source msha-controller-operator-history
- **operator_operates_mine:** Tiger Coal Company Inc → No 1; 1994-12-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Chris  Cline → No 1; 1994-12-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chris  Cline → Tiger Coal Company Inc; 1994-12-06 to current/open; source msha-controller-operator-history