# Relationship history for MSHA mine 1516218

Current hierarchy: **Don  Robertson → 3-D Mining Inc → #1**

- 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:** Inspiration Resources Corporation → #1; 1985-04-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J & N Mining Company Inc → #1; 1987-10-01 to 1989-09-20; source msha-controller-operator-history
- **controller_controls_mine:** Newsome Donald → #1; 1987-10-01 to 1989-09-20; source msha-controller-operator-history
- **controller_controls_operator:** Newsome Donald → J & N Mining Company Inc; 1987-10-01 to 1989-09-20; source msha-controller-operator-history
- **controller_controls_mine:** Ray  Slone et al → #1; 1988-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pick & Shovel Mining Inc → #1; 1989-09-21 to 1991-02-14; source msha-controller-operator-history
- **controller_controls_mine:** Hall Michael D → #1; 1989-09-21 to 1991-02-14; source msha-controller-operator-history
- **controller_controls_operator:** Hall Michael D → Pick & Shovel Mining Inc; 1989-09-21 to 1991-02-14; source msha-controller-operator-history
- **operator_operates_mine:** Plateau Fuels Inc → #1; 1991-02-15 to 1991-07-19; source msha-controller-operator-history
- **controller_controls_operator:** Inspiration Resources Corporation → Plateau Fuels Inc; 1991-02-15 to 1991-07-19; source msha-controller-operator-history
- **operator_operates_mine:** Beaver Creek Mining Inc → #1; 1991-07-20 to 1994-12-19; source msha-controller-operator-history
- **controller_controls_mine:** Bennett  Quillen → #1; 1991-07-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bennett  Quillen → Beaver Creek Mining Inc; 1991-07-20 to 1994-12-19; source msha-controller-operator-history
- **controller_controls_mine:** Hattie F  Johnson → #1; 1993-06-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Daves Branch Inc → #1; 1994-12-20 to 1998-01-18; source msha-controller-operator-history
- **controller_controls_operator:** Ray  Slone et al → Daves Branch Inc; 1994-12-20 to 1998-01-18; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Yonts et al → Daves Branch Inc; 1994-12-20 to 1998-01-18; source msha-controller-operator-history
- **operator_operates_mine:** 3-D Mining Inc → #1; 1998-01-19 to 1999-01-25; source msha-controller-operator-history
- **controller_controls_mine:** Don  Robertson → #1; 1998-01-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Don  Robertson → 3-D Mining Inc; 1998-01-19 to 1999-01-25; source msha-controller-operator-history
- **operator_operates_mine:** Spud Mining Inc → #1; 1999-01-26 to 1999-07-12; source msha-controller-operator-history
- **controller_controls_operator:** Hattie F  Johnson → Spud Mining Inc; 1999-01-26 to 1999-07-12; source msha-controller-operator-history
- **operator_operates_mine:** 3-D Mining Inc → #1; 1999-07-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Don  Robertson → 3-D Mining Inc; 1999-07-13 to current/open; source msha-controller-operator-history