# Relationship history for MSHA mine 1508001

Current hierarchy: **Nye Lloyd → H & N Coal Company Inc → No1**

- 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:** H & H Mining Inc → No1; 1975-01-01 to 1980-10-09; source msha-controller-operator-history
- **controller_controls_mine:** Helton Dewey → No1; 1975-01-01 to 1980-10-09; source msha-controller-operator-history
- **controller_controls_operator:** Helton Dewey → H & H Mining Inc; 1975-01-01 to 1980-10-09; source msha-controller-operator-history
- **operator_operates_mine:** Little River Mining Inc → No1; 1980-10-10 to 1982-03-07; source msha-controller-operator-history
- **controller_controls_mine:** Boothe Harold B & Danny R Reed → No1; 1980-10-10 to 1982-03-07; source msha-controller-operator-history
- **controller_controls_operator:** Boothe Harold B & Danny R Reed → Little River Mining Inc; 1980-10-10 to 1982-03-07; source msha-controller-operator-history
- **operator_operates_mine:** Sheild Mining Company Inc → No1; 1982-03-08 to 1984-11-05; source msha-controller-operator-history
- **controller_controls_mine:** Rhodes Blaine → No1; 1982-03-08 to 1984-11-05; source msha-controller-operator-history
- **controller_controls_operator:** Rhodes Blaine → Sheild Mining Company Inc; 1982-03-08 to 1984-11-05; source msha-controller-operator-history
- **operator_operates_mine:** Past Coal Company Inc → No1; 1984-11-06 to 1988-09-06; source msha-controller-operator-history
- **controller_controls_mine:** Bishop Bill Ray → No1; 1984-11-06 to 1988-09-06; source msha-controller-operator-history
- **controller_controls_operator:** Bishop Bill Ray → Past Coal Company Inc; 1984-11-06 to 1988-09-06; source msha-controller-operator-history
- **operator_operates_mine:** Past Coal Company Inc → No1; 1988-09-07 to 1989-07-17; source msha-controller-operator-history
- **controller_controls_mine:** Bartley Willie → No1; 1988-09-07 to 1989-07-17; source msha-controller-operator-history
- **controller_controls_operator:** Bartley Willie → Past Coal Company Inc; 1988-09-07 to 1989-07-17; source msha-controller-operator-history
- **operator_operates_mine:** H & N Coal Company Inc → No1; 1989-07-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nye Lloyd → No1; 1989-07-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nye Lloyd → H & N Coal Company Inc; 1989-07-18 to current/open; source msha-controller-operator-history