# Relationship history for MSHA mine 4404956

Current hierarchy: **Gary  Dunaway; Roger Scott  Collins → Bbc Coal Corp → Bbc #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

- **operator_operates_mine:** Stone Mountain Trucking Company → Bbc #3; 1978-02-01 to 1985-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Fraley Jerry L → Bbc #3; 1978-02-01 to 1985-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Fraley Jerry L → Stone Mountain Trucking Company; 1978-02-01 to 1985-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Brooks David L → Bbc #3; 1981-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** B B C Coal Corp → Bbc #3; 1985-12-01 to 1987-12-30; source msha-controller-operator-history
- **controller_controls_operator:** Brooks David L → B B C Coal Corp; 1985-12-01 to 1987-12-30; source msha-controller-operator-history
- **operator_operates_mine:** Bbc Coal Corp → Bbc #3; 1987-12-31 to 1993-06-06; source msha-controller-operator-history
- **controller_controls_mine:** Lee  Congleton → Bbc #3; 1987-12-31 to 1993-06-06; source msha-controller-operator-history
- **controller_controls_operator:** Lee  Congleton → Bbc Coal Corp; 1987-12-31 to 1993-06-06; source msha-controller-operator-history
- **operator_operates_mine:** Bbc Coal Corp → Bbc #3; 1993-06-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gary  Dunaway et al → Bbc #3; 1993-06-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Dunaway et al → Bbc Coal Corp; 1993-06-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roger Scott  Collins et al → Bbc Coal Corp; 1993-06-07 to current/open; source msha-controller-operator-history