# Relationship history for MSHA mine 4401815

Current hierarchy: **Pittston Company → Jewell Ridge Mining Corp → Jewell Ridge Mining Corp**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Pittston Company → Jewell Ridge Mining Corp; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jerry W  Maggard → Jewell Ridge Mining Corp; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** S & S Coal Company → Jewell Ridge Mining Corp; 1950-01-01 to 1973-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Whitt Marvin D → Jewell Ridge Mining Corp; 1950-01-01 to 1973-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Whitt Marvin D → S & S Coal Company; 1950-01-01 to 1973-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Maggard Coal Company Inc → Jewell Ridge Mining Corp; 1973-06-01 to 1988-07-24; source msha-controller-operator-history
- **controller_controls_operator:** Jerry W  Maggard → Maggard Coal Company Inc; 1973-06-01 to 1988-07-24; source msha-controller-operator-history
- **controller_controls_mine:** Pruitt Lora J → Jewell Ridge Mining Corp; 1986-03-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Deel Fork Mining Corp → Jewell Ridge Mining Corp; 1988-07-25 to 1990-01-03; source msha-controller-operator-history
- **controller_controls_operator:** Pruitt Lora J → Deel Fork Mining Corp; 1988-07-25 to 1990-01-03; source msha-controller-operator-history
- **operator_operates_mine:** Jewell Ridge Mining Corp → Jewell Ridge Mining Corp; 1990-01-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pittston Company → Jewell Ridge Mining Corp; 1990-01-04 to current/open; source msha-controller-operator-history