# Relationship history for MSHA mine 1514663

Current hierarchy: **James A  Comyns → Colonial Coal Company Inc → Surface Mine 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:** Tug River Energy Inc → Surface Mine No 1; 1984-06-01 to 1986-11-09; source msha-controller-operator-history
- **controller_controls_mine:** Leach Herbert N Sr → Surface Mine No 1; 1984-06-01 to 1986-11-09; source msha-controller-operator-history
- **controller_controls_operator:** Leach Herbert N Sr → Tug River Energy Inc; 1984-06-01 to 1986-11-09; source msha-controller-operator-history
- **operator_operates_mine:** Colonial Coal Company Inc → Surface Mine No 1; 1986-11-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James A  Comyns → Surface Mine No 1; 1986-11-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James A  Comyns → Colonial Coal Company Inc; 1986-11-10 to current/open; source msha-controller-operator-history