# Relationship history for MSHA mine 1504360

Current hierarchy: **Louisiana Land & Exploration Company → Sun Fire Coal Company → Sunfire Tipple**

- 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:** River Coal Company Inc → Sunfire Tipple; 1950-01-01 to 1977-12-19; source msha-controller-operator-history
- **controller_controls_mine:** Aminex Resources Corp → Sunfire Tipple; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Aminex Resources Corp → River Coal Company Inc; 1950-01-01 to 1977-12-19; source msha-controller-operator-history
- **controller_controls_mine:** Louisiana Land & Exploration Company → Sunfire Tipple; 1977-08-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sunfire Fuel Inc → Sunfire Tipple; 1977-12-20 to 1979-09-11; source msha-controller-operator-history
- **controller_controls_mine:** Gorman L D → Sunfire Tipple; 1977-12-20 to 1979-09-11; source msha-controller-operator-history
- **controller_controls_operator:** Gorman L D → Sunfire Fuel Inc; 1977-12-20 to 1979-09-11; source msha-controller-operator-history
- **operator_operates_mine:** Sun Fire Coal Company → Sunfire Tipple; 1979-09-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Louisiana Land & Exploration Company → Sun Fire Coal Company; 1979-09-12 to current/open; source msha-controller-operator-history