# Relationship history for MSHA mine 4602057

Current hierarchy: **Pittston Company → Meadow River Coal Company → New River 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

- **controller_controls_mine:** Pittston Company → New River Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Royal Coal Company → New River Mine; 1950-01-01 to 1983-05-23; source msha-controller-operator-history
- **controller_controls_mine:** National Bulk Carriers → New River Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** National Bulk Carriers → Royal Coal Company; 1950-01-01 to 1983-05-23; source msha-controller-operator-history
- **operator_operates_mine:** Royal Coal Company → New River Mine; 1983-05-24 to 1986-09-30; source msha-controller-operator-history
- **controller_controls_mine:** American-Hawaiian Steamship Company → New River Mine; 1983-05-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** American-Hawaiian Steamship Company → Royal Coal Company; 1983-05-24 to 1986-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Whitewater Resources Inc → New River Mine; 1986-10-01 to 1987-11-10; source msha-controller-operator-history
- **controller_controls_mine:** Mc Millan James O → New River Mine; 1986-10-01 to 1987-11-10; source msha-controller-operator-history
- **controller_controls_operator:** Mc Millan James O → Whitewater Resources Inc; 1986-10-01 to 1987-11-10; source msha-controller-operator-history
- **operator_operates_mine:** Spartan Sewell Inc → New River Mine; 1987-11-11 to 1989-06-13; source msha-controller-operator-history
- **controller_controls_mine:** Law H Wayne → New River Mine; 1987-11-11 to 1989-06-13; source msha-controller-operator-history
- **controller_controls_operator:** Law H Wayne → Spartan Sewell Inc; 1987-11-11 to 1989-06-13; source msha-controller-operator-history
- **operator_operates_mine:** Southeast Leasing Inc → New River Mine; 1989-06-14 to 1990-03-08; source msha-controller-operator-history
- **controller_controls_mine:** Jollay R C Et Al → New River Mine; 1989-06-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jollay R C Et Al → Southeast Leasing Inc; 1989-06-14 to 1990-03-08; source msha-controller-operator-history
- **operator_operates_mine:** Riverfront Coal Corp → New River Mine; 1990-03-09 to 1991-08-15; source msha-controller-operator-history
- **controller_controls_mine:** Lowe Glenn → New River Mine; 1990-03-09 to 1991-08-15; source msha-controller-operator-history
- **controller_controls_operator:** Lowe Glenn → Riverfront Coal Corp; 1990-03-09 to 1991-08-15; source msha-controller-operator-history
- **operator_operates_mine:** Meadow River Coal Company → New River Mine; 1991-08-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pittston Company → Meadow River Coal Company; 1991-08-16 to current/open; source msha-controller-operator-history