# Relationship history for MSHA mine 4601962

Current hierarchy: **Ellis Charlie R → Dale & Tina Coal Company Inc → A-Mine**

- 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:** Ranger Fuel Corp → A-Mine; 1950-01-01 to 1979-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Pittston Company → A-Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pittston Company → Ranger Fuel Corp; 1950-01-01 to 1979-01-31; source msha-controller-operator-history
- **operator_operates_mine:** 5-Leaf Clover Corp → A-Mine; 1979-02-01 to 1981-03-08; source msha-controller-operator-history
- **controller_controls_mine:** Creska Lucille → A-Mine; 1979-02-01 to 1981-03-08; source msha-controller-operator-history
- **controller_controls_operator:** Creska Lucille → 5-Leaf Clover Corp; 1979-02-01 to 1981-03-08; source msha-controller-operator-history
- **operator_operates_mine:** Dale & Tina Mining Company Inc → A-Mine; 1981-03-09 to 1984-04-11; source msha-controller-operator-history
- **controller_controls_mine:** Harper Dale → A-Mine; 1981-03-09 to 1984-04-11; source msha-controller-operator-history
- **controller_controls_operator:** Harper Dale → Dale & Tina Mining Company Inc; 1981-03-09 to 1984-04-11; source msha-controller-operator-history
- **operator_operates_mine:** Dale & Tina Coal Company Inc → A-Mine; 1984-04-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ellis Charlie R → A-Mine; 1984-04-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ellis Charlie R → Dale & Tina Coal Company Inc; 1984-04-12 to current/open; source msha-controller-operator-history