# Relationship history for MSHA mine 4401532

Current hierarchy: **Price Junior-Burk Shortridge → P S & R Coal Company → No 1 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:** Dilston Mining Corp → No 1 Mine; 1950-01-01 to 1975-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Ratliff Arthur M Jr → No 1 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ratliff Arthur M Jr → Dilston Mining Corp; 1950-01-01 to 1975-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Owens Otto & Gordon Et Al → No 1 Mine; 1975-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C W & W Coal Company → No 1 Mine; 1976-01-01 to 1977-03-03; source msha-controller-operator-history
- **controller_controls_mine:** Wolford Lonnie W--Ronald & James E Calhoun → No 1 Mine; 1976-01-01 to 1977-03-03; source msha-controller-operator-history
- **controller_controls_operator:** Wolford Lonnie W--Ronald & James E Calhoun → C W & W Coal Company; 1976-01-01 to 1977-03-03; source msha-controller-operator-history
- **operator_operates_mine:** Faith Coal Company Inc → No 1 Mine; 1977-03-04 to 1977-05-02; source msha-controller-operator-history
- **controller_controls_mine:** Wolford Lonnie W → No 1 Mine; 1977-03-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wolford Lonnie W → Faith Coal Company Inc; 1977-03-04 to 1977-05-02; source msha-controller-operator-history
- **operator_operates_mine:** Owens Coal Company → No 1 Mine; 1977-05-03 to 1977-06-09; source msha-controller-operator-history
- **controller_controls_operator:** Owens Otto & Gordon Et Al → Owens Coal Company; 1977-05-03 to 1977-06-09; source msha-controller-operator-history
- **operator_operates_mine:** Double O & C Coal Company Inc → No 1 Mine; 1977-06-10 to 1977-09-15; source msha-controller-operator-history
- **controller_controls_mine:** Owens Delmer & Ronnie A-Bobby Compton → No 1 Mine; 1977-06-10 to 1977-11-16; source msha-controller-operator-history
- **controller_controls_operator:** Owens Delmer & Ronnie A-Bobby Compton → Double O & C Coal Company Inc; 1977-06-10 to 1977-09-15; source msha-controller-operator-history
- **controller_controls_mine:** Chambers Charlie T Et Al → No 1 Mine; 1977-06-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** 4-C Coal Company → No 1 Mine; 1977-09-16 to 1979-02-12; source msha-controller-operator-history
- **controller_controls_operator:** Chambers Charlie T Et Al → 4-C Coal Company; 1977-09-16 to 1979-02-12; source msha-controller-operator-history
- **operator_operates_mine:** P S & R Coal Company → No 1 Mine; 1979-02-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Price Junior-Burk Shortridge Et Al → No 1 Mine; 1979-02-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Price Junior-Burk Shortridge Et Al → P S & R Coal Company; 1979-02-13 to current/open; source msha-controller-operator-history