# Relationship history for MSHA mine 0102142

Current hierarchy: **Raines Charles H → Mc Collum Coal Company Inc → Mc Collum Pit No 2**

- 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:** Coggin Thomas E → Mc Collum Pit No 2; 1978-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mc Collum Coal Company Inc → Mc Collum Pit No 2; 1979-11-01 to 1982-02-07; source msha-controller-operator-history
- **controller_controls_operator:** Coggin Thomas E → Mc Collum Coal Company Inc; 1979-11-01 to 1982-02-07; source msha-controller-operator-history
- **controller_controls_mine:** Raines Charles H → Mc Collum Pit No 2; 1982-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mc Collum Coal Company Inc → Mc Collum Pit No 2; 1982-02-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Raines Charles H → Mc Collum Coal Company Inc; 1982-02-08 to current/open; source msha-controller-operator-history