# Relationship history for MSHA mine 1513497

Current hierarchy: **Stanley W Osborne → Joshco Mining Inc → No 4**

- 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:** Jena Coal Company Inc → No 4; 1982-05-01 to 1985-09-03; source msha-controller-operator-history
- **controller_controls_mine:** Stumbo German → No 4; 1982-05-01 to 1985-09-03; source msha-controller-operator-history
- **controller_controls_operator:** Stumbo German → Jena Coal Company Inc; 1982-05-01 to 1985-09-03; source msha-controller-operator-history
- **operator_operates_mine:** Pace Mining Corp → No 4; 1985-09-04 to 1990-10-02; source msha-controller-operator-history
- **controller_controls_mine:** Crum James Iii → No 4; 1985-09-04 to 1993-03-03; source msha-controller-operator-history
- **controller_controls_operator:** Crum James Iii → Pace Mining Corp; 1985-09-04 to 1990-10-02; source msha-controller-operator-history
- **controller_controls_mine:** Stanley W Osborne → No 4; 1990-06-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Timely Mining Inc → No 4; 1990-10-03 to 1993-07-19; source msha-controller-operator-history
- **controller_controls_mine:** Davidson Zettie → No 4; 1990-10-03 to 1993-07-19; source msha-controller-operator-history
- **controller_controls_operator:** Davidson Zettie → Timely Mining Inc; 1990-10-03 to 1993-07-19; source msha-controller-operator-history
- **operator_operates_mine:** Joshco Mining Inc → No 4; 1993-07-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stanley W Osborne → Joshco Mining Inc; 1993-07-20 to current/open; source msha-controller-operator-history