# Relationship history for MSHA mine 1514429

Current hierarchy: **Bargo Swannie-Leonard Miller → Need More Energy Coal Company → No 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

- **operator_operates_mine:** Brown Branch Mining → No 1; 1984-01-01 to 1985-11-03; source msha-controller-operator-history
- **controller_controls_mine:** Allen Rex & Archie Hobbs Jr → No 1; 1984-01-01 to 1985-11-03; source msha-controller-operator-history
- **controller_controls_operator:** Allen Rex & Archie Hobbs Jr → Brown Branch Mining; 1984-01-01 to 1985-11-03; source msha-controller-operator-history
- **operator_operates_mine:** Need More Coal Company → No 1; 1985-11-04 to 1985-12-08; source msha-controller-operator-history
- **controller_controls_mine:** Jones Samuel F & Elmer Smith → No 1; 1985-11-04 to 1985-12-08; source msha-controller-operator-history
- **controller_controls_operator:** Jones Samuel F & Elmer Smith → Need More Coal Company; 1985-11-04 to 1985-12-08; source msha-controller-operator-history
- **operator_operates_mine:** Need More Energy Coal Company → No 1; 1985-12-09 to 1986-03-02; source msha-controller-operator-history
- **controller_controls_mine:** Cox Ronnie L Et Al → No 1; 1985-12-09 to 1986-03-02; source msha-controller-operator-history
- **controller_controls_operator:** Cox Ronnie L Et Al → Need More Energy Coal Company; 1985-12-09 to 1986-03-02; source msha-controller-operator-history
- **operator_operates_mine:** Need More Energy Coal Company → No 1; 1986-03-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bargo Swannie-Leonard Miller Et Al → No 1; 1986-03-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bargo Swannie-Leonard Miller Et Al → Need More Energy Coal Company; 1986-03-03 to current/open; source msha-controller-operator-history