# Relationship history for MSHA mine 4403479

Current hierarchy: **Pittston Company → Sea B Mining Company → Big Creek Seaboard No 2 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Sea B Mining Company → Big Creek Seaboard No 2 Mine; 1950-01-01 to 1989-08-21; source msha-controller-operator-history
- **controller_controls_mine:** Pittston Company → Big Creek Seaboard No 2 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pittston Company → Sea B Mining Company; 1950-01-01 to 1989-08-21; source msha-controller-operator-history
- **operator_operates_mine:** Malachi Mining Inc → Big Creek Seaboard No 2 Mine; 1989-08-22 to 1990-01-16; source msha-controller-operator-history
- **controller_controls_mine:** Gilliam Charles Jr → Big Creek Seaboard No 2 Mine; 1989-08-22 to 1992-06-07; source msha-controller-operator-history
- **controller_controls_operator:** Gilliam Charles Jr → Malachi Mining Inc; 1989-08-22 to 1990-01-16; source msha-controller-operator-history
- **operator_operates_mine:** Sea B Mining Company → Big Creek Seaboard No 2 Mine; 1990-01-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pittston Company → Sea B Mining Company; 1990-01-17 to current/open; source msha-controller-operator-history