# Relationship history for MSHA mine 1516992

Current hierarchy: **Teague Hobert → Bandit Coal Company → No 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

- **controller_controls_mine:** Patterson Bill Et Al → No 1; 1983-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cox Ronnie L Et Al → No 1; 1990-01-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pharaoh Coal → No 1; 1990-10-01 to 1991-04-16; source msha-controller-operator-history
- **controller_controls_operator:** Cox Ronnie L Et Al → Pharaoh Coal; 1990-10-01 to 1991-04-16; source msha-controller-operator-history
- **operator_operates_mine:** Gordon Coal Company → No 1; 1991-04-17 to 1992-01-15; source msha-controller-operator-history
- **controller_controls_operator:** Patterson Bill Et Al → Gordon Coal Company; 1991-04-17 to 1992-01-15; source msha-controller-operator-history
- **operator_operates_mine:** Bandit Coal Company → No 1; 1992-01-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Teague Hobert Et Al → No 1; 1992-01-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Teague Hobert Et Al → Bandit Coal Company; 1992-01-16 to current/open; source msha-controller-operator-history