# Relationship history for MSHA mine 4607280

Current hierarchy: **Metec Acquisition Corp → Lowlands Coal Corp → #109**

- 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:** Metec Acquisition Corp → #109; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Glenville Company → #109; 1987-04-01 to 1988-04-17; source msha-controller-operator-history
- **controller_controls_mine:** Reardon Robert → #109; 1987-04-01 to 1988-04-17; source msha-controller-operator-history
- **controller_controls_operator:** Reardon Robert → Glenville Company; 1987-04-01 to 1988-04-17; source msha-controller-operator-history
- **operator_operates_mine:** Lowlands Coal Corp → #109; 1988-04-18 to 1988-09-27; source msha-controller-operator-history
- **controller_controls_operator:** Metec Acquisition Corp → Lowlands Coal Corp; 1988-04-18 to 1988-09-27; source msha-controller-operator-history
- **operator_operates_mine:** Lowlands Coal Corp → #109; 1988-09-28 to 1989-10-16; source msha-controller-operator-history
- **controller_controls_mine:** Rsv → #109; 1988-09-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rsv → Lowlands Coal Corp; 1988-09-28 to 1989-10-16; source msha-controller-operator-history
- **operator_operates_mine:** Lowlands Coal Corp → #109; 1989-10-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Metec Acquisition Corp → Lowlands Coal Corp; 1989-10-17 to current/open; source msha-controller-operator-history