# Relationship history for MSHA mine 4406310

Current hierarchy: **MAPCO Inc → Raven Coal Company Inc → Teddy Bear**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** D & F Mining Inc → Teddy Bear; 1986-07-01 to 1991-06-04; source msha-controller-operator-history
- **controller_controls_mine:** Richardson Fred → Teddy Bear; 1986-07-01 to 1991-06-04; source msha-controller-operator-history
- **controller_controls_operator:** Richardson Fred → D & F Mining Inc; 1986-07-01 to 1991-06-04; source msha-controller-operator-history
- **operator_operates_mine:** Day Star Coal Corp → Teddy Bear; 1991-06-05 to 1992-04-02; source msha-controller-operator-history
- **controller_controls_mine:** Keene Michael & Ralph Miller → Teddy Bear; 1991-06-05 to 1992-04-02; source msha-controller-operator-history
- **controller_controls_operator:** Keene Michael & Ralph Miller → Day Star Coal Corp; 1991-06-05 to 1992-04-02; source msha-controller-operator-history
- **operator_operates_mine:** Chelley Coal Company Inc → Teddy Bear; 1992-04-03 to 1993-08-15; source msha-controller-operator-history
- **controller_controls_mine:** Baker Brenda → Teddy Bear; 1992-04-03 to 1993-08-15; source msha-controller-operator-history
- **controller_controls_operator:** Baker Brenda → Chelley Coal Company Inc; 1992-04-03 to 1993-08-15; source msha-controller-operator-history
- **operator_operates_mine:** Black Gem Coal → Teddy Bear; 1993-08-16 to 1993-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Jerry W  Maggard → Teddy Bear; 1993-08-16 to 1993-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Jerry W  Maggard → Black Gem Coal; 1993-08-16 to 1993-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Seay Joseph → Teddy Bear; 1993-10-25 to 1994-04-10; source msha-controller-operator-history
- **operator_operates_mine:** S & J Coal Company Inc → Teddy Bear; 1993-12-01 to 1994-04-10; source msha-controller-operator-history
- **controller_controls_operator:** Seay Joseph → S & J Coal Company Inc; 1993-12-01 to 1994-04-10; source msha-controller-operator-history
- **operator_operates_mine:** Teddy Bear Coal Company Inc → Teddy Bear; 1994-04-11 to 1995-05-03; source msha-controller-operator-history
- **controller_controls_mine:** Spurrier Joe L & Marjorie → Teddy Bear; 1994-04-11 to 1995-05-03; source msha-controller-operator-history
- **controller_controls_operator:** Spurrier Joe L & Marjorie → Teddy Bear Coal Company Inc; 1994-04-11 to 1995-05-03; source msha-controller-operator-history
- **operator_operates_mine:** Raven Coal Company Inc → Teddy Bear; 1995-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** MAPCO Inc → Teddy Bear; 1995-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** MAPCO Inc → Raven Coal Company Inc; 1995-05-04 to current/open; source msha-controller-operator-history