# Relationship history for MSHA mine 1516181

Current hierarchy: **Larry  Cantrell → Cedar Grove Mining Inc → No 6**

- 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:** Akers Arthur Bill → No 6; 1974-01-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Larry  Cantrell → No 6; 1983-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hoopwood Mining Inc → No 6; 1987-09-01 to 1992-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Akers Arthur Bill → Hoopwood Mining Inc; 1987-09-01 to 1992-07-09; source msha-controller-operator-history
- **operator_operates_mine:** Cedar Grove Mining Inc → No 6; 1992-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Cantrell → Cedar Grove Mining Inc; 1992-07-10 to current/open; source msha-controller-operator-history