# Relationship history for MSHA mine 4604351

Current hierarchy: **Langford James E → Upco Coal Inc → Rooting Strip**

- 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:** La Rosa Corp → Rooting Strip; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Galloway Company Inc → Rooting Strip; 1975-01-01 to 1984-06-17; source msha-controller-operator-history
- **controller_controls_mine:** Muse Albert → Rooting Strip; 1975-01-01 to 1984-06-17; source msha-controller-operator-history
- **controller_controls_operator:** Muse Albert → Galloway Company Inc; 1975-01-01 to 1984-06-17; source msha-controller-operator-history
- **operator_operates_mine:** La Rosa Fuel Company Inc → Rooting Strip; 1984-06-18 to 1985-01-13; source msha-controller-operator-history
- **controller_controls_operator:** La Rosa Corp → La Rosa Fuel Company Inc; 1984-06-18 to 1985-01-13; source msha-controller-operator-history
- **operator_operates_mine:** Upco Coal Inc → Rooting Strip; 1985-01-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Langford James E → Rooting Strip; 1985-01-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Langford James E → Upco Coal Inc; 1985-01-14 to current/open; source msha-controller-operator-history