# Relationship history for MSHA mine 4405470

Current hierarchy: **Mullins Bob R → B M Coal Company → 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:** O'Quinn Franklin D R & Wilburn Blankenship Et Al → No 2; 1977-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Omalene  Deel et al → No 2; 1979-01-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Chip & Jeff Coal Company → No 2; 1980-07-01 to 1980-10-09; source msha-controller-operator-history
- **controller_controls_operator:** Omalene  Deel et al → Chip & Jeff Coal Company; 1980-07-01 to 1980-10-09; source msha-controller-operator-history
- **operator_operates_mine:** Black Hollow Coal Company Inc → No 2; 1980-10-10 to 1981-08-02; source msha-controller-operator-history
- **controller_controls_operator:** O'Quinn Franklin D R & Wilburn Blankenship Et Al → Black Hollow Coal Company Inc; 1980-10-10 to 1981-08-02; source msha-controller-operator-history
- **controller_controls_mine:** Mullins Alcieberry → No 2; 1981-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mullins Enterprises Inc (Of Va) → No 2; 1981-08-03 to 1982-02-03; source msha-controller-operator-history
- **controller_controls_operator:** Mullins Alcieberry → Mullins Enterprises Inc (Of Va); 1981-08-03 to 1982-02-03; source msha-controller-operator-history
- **controller_controls_mine:** Mullins Bob R → No 2; 1981-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** B M Coal Company → No 2; 1982-02-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mullins Bob R → B M Coal Company; 1982-02-04 to current/open; source msha-controller-operator-history