# Relationship history for MSHA mine 1517002

Current hierarchy: **Joby  Fields → Mate Creek Development Company → Mine No 3**

- 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:** Hobart  Anderson  et al → Mine No 3; 1986-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joby  Fields → Mine No 3; 1987-07-06 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** P R O S Mining Inc → Mine No 3; 1990-11-01 to 1992-09-07; source msha-controller-operator-history
- **controller_controls_mine:** Beaver Thomas O & Rondal Toler → Mine No 3; 1990-11-01 to 1992-09-07; source msha-controller-operator-history
- **controller_controls_operator:** Beaver Thomas O & Rondal Toler → P R O S Mining Inc; 1990-11-01 to 1992-09-07; source msha-controller-operator-history
- **operator_operates_mine:** Broken Hill Mining Company Inc → Mine No 3; 1992-09-08 to 1992-10-01; source msha-controller-operator-history
- **controller_controls_operator:** Hobart  Anderson  et al → Broken Hill Mining Company Inc; 1992-09-08 to 1992-10-01; source msha-controller-operator-history
- **operator_operates_mine:** Garrett Mining Inc → Mine No 3; 1992-10-02 to 1994-09-14; source msha-controller-operator-history
- **controller_controls_mine:** Rex  Fought → Mine No 3; 1992-10-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rex  Fought → Garrett Mining Inc; 1992-10-02 to 1994-09-14; source msha-controller-operator-history
- **operator_operates_mine:** Mate Creek Development Company → Mine No 3; 1994-09-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joby  Fields → Mate Creek Development Company; 1994-09-15 to current/open; source msha-controller-operator-history