# Relationship history for MSHA mine 5000304

Current hierarchy: **Robert  Mau; Jacob D  Eisel → Buckeye Land and Minerals Inc → Olive Creek Mine**

- 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:** Olive Creek Mines → Olive Creek Mine; 1950-01-01 to 2012-03-01; source msha-controller-operator-history
- **controller_controls_mine:** Olive Creek Mines → Olive Creek Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Olive Creek Mines → Olive Creek Mines; 1950-01-01 to 2012-03-01; source msha-controller-operator-history
- **operator_operates_mine:** Buckeye Land and Minerals Inc → Olive Creek Mine; 2012-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Mau et al → Olive Creek Mine; 2012-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Mau et al → Buckeye Land and Minerals Inc; 2012-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jacob D  Eisel et al → Buckeye Land and Minerals Inc; 2012-03-02 to current/open; source msha-controller-operator-history