# Relationship history for MSHA mine 1516241

Current hierarchy: **Charles T  Norman → Pike Colony Coal Corp → 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:** James A  Comyns → No 1; 1986-11-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John F  Stapleton → No 1; 1987-05-01 to 1990-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Colonial Coal Company Inc → No 1; 1987-11-01 to 1989-02-09; source msha-controller-operator-history
- **controller_controls_operator:** James A  Comyns → Colonial Coal Company Inc; 1987-11-01 to 1989-02-09; source msha-controller-operator-history
- **operator_operates_mine:** Desparado Fuels Inc → No 1; 1989-02-10 to 1990-04-30; source msha-controller-operator-history
- **controller_controls_operator:** John F  Stapleton → Desparado Fuels Inc; 1989-02-10 to 1990-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Hurley Bruce → No 1; 1990-02-06 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Peter Creek Coal Company Inc → No 1; 1990-05-01 to 1992-08-20; source msha-controller-operator-history
- **controller_controls_operator:** Hurley Bruce → Peter Creek Coal Company Inc; 1990-05-01 to 1992-08-20; source msha-controller-operator-history
- **operator_operates_mine:** Pauline Mining Inc → No 1; 1992-08-21 to 1993-07-22; source msha-controller-operator-history
- **controller_controls_mine:** Hurley Pauline J → No 1; 1992-08-21 to 1993-07-22; source msha-controller-operator-history
- **controller_controls_operator:** Hurley Pauline J → Pauline Mining Inc; 1992-08-21 to 1993-07-22; source msha-controller-operator-history
- **operator_operates_mine:** Pike Colony Coal Corp → No 1; 1993-07-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Charles T  Norman → No 1; 1993-07-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles T  Norman → Pike Colony Coal Corp; 1993-07-23 to current/open; source msha-controller-operator-history