# Relationship history for MSHA mine 1516296

Current hierarchy: **Whetstone Eric → Cutshin Colleries Imcorporated → 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:** Spike Coal Inc → No 1; 1988-02-01 to 1988-10-23; source msha-controller-operator-history
- **controller_controls_mine:** Baker Nobe → No 1; 1988-02-01 to 1990-05-03; source msha-controller-operator-history
- **controller_controls_operator:** Baker Nobe → Spike Coal Inc; 1988-02-01 to 1988-10-23; source msha-controller-operator-history
- **operator_operates_mine:** Cooper Coal Company Inc → No 1; 1988-10-24 to 1989-08-27; source msha-controller-operator-history
- **controller_controls_mine:** Cooper A Gordon → No 1; 1988-10-24 to 1989-08-27; source msha-controller-operator-history
- **controller_controls_operator:** Cooper A Gordon → Cooper Coal Company Inc; 1988-10-24 to 1989-08-27; source msha-controller-operator-history
- **operator_operates_mine:** Cutshin Colleries Imcorporated → No 1; 1989-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Whetstone Eric → No 1; 1989-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Whetstone Eric → Cutshin Colleries Imcorporated; 1989-08-28 to current/open; source msha-controller-operator-history