# Relationship history for MSHA mine 4606426

Current hierarchy: **Rackwood Mineral Holdings Plc → Royal Scot Minerals Inc → Mine No 59**

- 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:** Leckie Smokeless Coal Company → Mine No 59; 1981-10-01 to 1997-11-10; source msha-controller-operator-history
- **controller_controls_mine:** Sidusco Inc → Mine No 59; 1981-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sidusco Inc → Leckie Smokeless Coal Company; 1981-10-01 to 1997-11-10; source msha-controller-operator-history
- **operator_operates_mine:** Royal Scot Minerals Inc → Mine No 59; 1997-11-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rackwood Mineral Holdings Plc → Mine No 59; 1997-11-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rackwood Mineral Holdings Plc → Royal Scot Minerals Inc; 1997-11-11 to current/open; source msha-controller-operator-history