# Relationship history for MSHA mine 1513745

Current hierarchy: **Gary  Dunaway; Roger Scott  Collins → Tram Coal Company Inc → No 2**

- 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:** Coleman Roy Darrell → No 2; 1974-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Prater Creek Mining Inc → No 2; 1982-09-01 to 1983-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Emmett  Lawson → No 2; 1982-09-01 to 1991-09-08; source msha-controller-operator-history
- **controller_controls_operator:** Emmett  Lawson → Prater Creek Mining Inc; 1982-09-01 to 1983-07-25; source msha-controller-operator-history
- **operator_operates_mine:** Dela Branch Coal Company Inc → No 2; 1983-07-26 to 1985-02-20; source msha-controller-operator-history
- **controller_controls_mine:** Johnson Robie → No 2; 1983-07-26 to 1985-02-20; source msha-controller-operator-history
- **controller_controls_operator:** Johnson Robie → Dela Branch Coal Company Inc; 1983-07-26 to 1985-02-20; source msha-controller-operator-history
- **controller_controls_mine:** Ousley Cecil D → No 2; 1985-02-20 to 1986-02-11; source msha-controller-operator-history
- **operator_operates_mine:** Maxton Land & Mineral Company Inc → No 2; 1985-02-21 to 1985-08-29; source msha-controller-operator-history
- **controller_controls_operator:** Ousley Cecil D → Maxton Land & Mineral Company Inc; 1985-02-21 to 1985-08-29; source msha-controller-operator-history
- **operator_operates_mine:** Pike Buchanan Coal Company Inc → No 2; 1985-08-30 to 1986-12-22; source msha-controller-operator-history
- **controller_controls_operator:** Coleman Roy Darrell → Pike Buchanan Coal Company Inc; 1985-08-30 to 1986-12-22; source msha-controller-operator-history
- **operator_operates_mine:** Jean & Mary Coal Company Inc → No 2; 1986-12-23 to 1989-12-07; source msha-controller-operator-history
- **controller_controls_mine:** Hall Carlos → No 2; 1986-12-23 to 1989-12-07; source msha-controller-operator-history
- **controller_controls_operator:** Hall Carlos → Jean & Mary Coal Company Inc; 1986-12-23 to 1989-12-07; source msha-controller-operator-history
- **operator_operates_mine:** Prater Creek Mining Inc → No 2; 1989-12-08 to 1991-09-08; source msha-controller-operator-history
- **controller_controls_operator:** Emmett  Lawson → Prater Creek Mining Inc; 1989-12-08 to 1991-09-08; source msha-controller-operator-history
- **operator_operates_mine:** Delta Pike Mining Inc → No 2; 1991-09-09 to 1993-02-09; source msha-controller-operator-history
- **controller_controls_mine:** Blackburn Bobby Jr → No 2; 1991-09-09 to 1993-02-09; source msha-controller-operator-history
- **controller_controls_operator:** Blackburn Bobby Jr → Delta Pike Mining Inc; 1991-09-09 to 1993-02-09; source msha-controller-operator-history
- **operator_operates_mine:** Delta Pike Mining Inc → No 2; 1993-02-10 to 1994-06-06; source msha-controller-operator-history
- **controller_controls_mine:** Earl  Lawson et al → No 2; 1993-02-10 to 1994-06-06; source msha-controller-operator-history
- **controller_controls_operator:** Earl  Lawson et al → Delta Pike Mining Inc; 1993-02-10 to 1994-06-06; source msha-controller-operator-history
- **controller_controls_mine:** Gary  Dunaway et al → No 2; 1994-04-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tram Coal Company Inc → No 2; 1994-06-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Dunaway et al → Tram Coal Company Inc; 1994-06-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roger Scott  Collins et al → Tram Coal Company Inc; 1994-06-07 to current/open; source msha-controller-operator-history