# Relationship history for MSHA mine 4002835

Current hierarchy: **Phillips Junior → P & W Coal Company → Mine #1**

- 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:** Lowe'S Coal Company Inc → Mine #1; 1983-08-01 to 1985-01-11; source msha-controller-operator-history
- **controller_controls_mine:** Lowe Larry & Steve Et Al → Mine #1; 1983-08-01 to 1988-11-07; source msha-controller-operator-history
- **controller_controls_operator:** Lowe Larry & Steve Et Al → Lowe'S Coal Company Inc; 1983-08-01 to 1985-01-11; source msha-controller-operator-history
- **operator_operates_mine:** East Harriman Coal Company → Mine #1; 1985-01-12 to 1987-09-09; source msha-controller-operator-history
- **controller_controls_mine:** Reeves Terry C → Mine #1; 1985-01-12 to 1987-09-09; source msha-controller-operator-history
- **controller_controls_operator:** Reeves Terry C → East Harriman Coal Company; 1985-01-12 to 1987-09-09; source msha-controller-operator-history
- **operator_operates_mine:** Lowe'S Coal Company Inc → Mine #1; 1987-09-10 to 1988-11-07; source msha-controller-operator-history
- **controller_controls_operator:** Lowe Larry & Steve Et Al → Lowe'S Coal Company Inc; 1987-09-10 to 1988-11-07; source msha-controller-operator-history
- **operator_operates_mine:** P & W Coal Company → Mine #1; 1988-11-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Phillips Junior → Mine #1; 1988-11-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Phillips Junior → P & W Coal Company; 1988-11-08 to current/open; source msha-controller-operator-history