# Relationship history for MSHA mine 4606370

Current hierarchy: **Smith Stirl Richard → Teays Mining Inc → Mine No 2**

- 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:** Tony'S Colliery Inc → Mine No 2; 1981-07-01 to 1989-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Politino Rodney & Tony Jr → Mine No 2; 1981-07-01 to 1989-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Politino Rodney & Tony Jr → Tony'S Colliery Inc; 1981-07-01 to 1989-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Smith Stirl Richard → Mine No 2; 1989-01-18 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Teays Mining Inc → Mine No 2; 1989-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Smith Stirl Richard → Teays Mining Inc; 1989-11-01 to current/open; source msha-controller-operator-history